diff --git a/packages/common/infra/package.json b/packages/common/infra/package.json
index 329feedffc94f..1decf46819438 100644
--- a/packages/common/infra/package.json
+++ b/packages/common/infra/package.json
@@ -16,6 +16,7 @@
     "@affine/templates": "workspace:*",
     "@blocksuite/affine": "0.17.26",
     "@datastructures-js/binary-search-tree": "^5.3.2",
+    "eventemitter2": "^6.4.9",
     "foxact": "^0.2.33",
     "fractional-indexing": "^3.2.0",
     "fuse.js": "^7.0.0",
diff --git a/packages/common/infra/src/op/README.md b/packages/common/infra/src/op/README.md
new file mode 100644
index 0000000000000..b3d55da548332
--- /dev/null
+++ b/packages/common/infra/src/op/README.md
@@ -0,0 +1,174 @@
+# usage
+
+## Register Op Handlers
+
+### Function call handler
+
+```ts
+class AddOp extends Op<{ a: number; b: number }, number> {}
+
+// register
+const consumer: OpConsumer;
+consumer.register(AddOp, ({ a, b }) => a + b);
+
+// call
+const producer: OpProducer;
+const ret = producer.send(new AddOp({ a: 1, b: 2 })); // Promise<3>
+```
+
+### Stream call handler
+
+```ts
+class SubscribeStatusOp extends Op<string, string> {}
+
+// register
+const consumer: OpConsumer;
+consumer.registerSubscribable(SubscribeStatusOp, (name: string) => {
+  return interval(3000).pipe(map(() => 'connected'));
+});
+
+// subscribe
+const producer: OpProducer;
+producer.subscribe(new SubscribeStatusOp('server'), {
+  next: status => {
+    ui.setServerStatus(status);
+  },
+  error: error => {
+    ui.setServerError(error);
+  },
+  complete: () => {
+    //
+  },
+});
+```
+
+### Transfer variables
+
+> [Transferable Objects](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Transferable_objects)
+
+#### Producer transferables
+
+```ts
+class JobOp extends Op<{ name: string; data: Uint8Array; data2: Uint8Array }, void> {}
+
+const producer: OpProducer;
+const data = new Uint8Array([1, 2, 3]);
+const nonTransferredData = new Uint8Array([1, 2, 3]);
+producer.send(new JobOp({ name: 'compress', data, data2: nonTransferredData }).transfer([data.buffer]));
+
+// after transferring, you can not use the transferred variables anymore!!!
+// moved
+assertEq(data.byteLength, 0);
+// copied
+assertEq(nonTransferredData.byteLength, 3);
+```
+
+#### Consumer transferables
+
+```ts
+class JobOp extends Op<{ id: string }, Uint8Array> {}
+
+const consumer: OpConsumer;
+consumer.register(JobOp, ({ id }) => {
+  const data = new Uint8Array([1, 2, 3]);
+  return transfer(data, [data.buffer]);
+});
+consumer.registerSubscribable(JobOp, ({ id }) => {
+  return interval(3000).pipe(
+    map(() => {
+      const data = new Uint8Array([1, 2, 3]);
+      transfer(data, [data.buffer]);
+    })
+  );
+});
+```
+
+## Communication
+
+### BroadcastChannel
+
+:::CAUTION
+
+BroadcastChannel doesn't support transfer transferable objects. All data passed through it's `postMessage` api would be structured cloned
+
+see [Structured_clone_algorithm](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm)
+
+:::
+
+```ts
+const channel = new BroadcastChannel('domain');
+const consumer = new OpConsumer(channel);
+consumer.listen();
+
+const producer = new OpProducer(channel);
+producer.listen();
+```
+
+### MessagePort
+
+```ts
+const { port1, port2 } = new MessagePort();
+
+const producer = new OpProducer(port1);
+const consumer = new OpConsumer(port2);
+```
+
+### Worker
+
+```ts
+const worker = new Worker('./xxx-worker');
+const producer = new OpProducer(worker);
+
+// in worker
+const consumer = new OpConsumer(globalThis);
+consumer.listen();
+```
+
+### SharedWorker
+
+```ts
+const worker = new SharedWorker('./xxx-worker');
+const producer = new OpProducer(worker.port);
+
+// in worker
+globalThis.addEventListener('connect', event => {
+  const port = event.ports[0];
+  const consumer = new OpConsumer(port);
+  consumer.listen();
+});
+```
+
+## Why Pass Operations by Classes instead of Runtimeless Interfaces
+
+### clean code in caller side
+
+```ts
+// class
+class XXXOp extends Op<void, void> {}
+
+send(new XXXOp());
+
+// interface
+send<Op<void, void>>({});
+```
+
+### avoid magic strings & straightforward type checking
+
+```ts
+// class
+class AddOp extends Op<{ a: number; b: number }, number> {}
+send(new AddOp({ a: 1, b: 2 }));
+
+register(AddOp, ({ a, b }) => a + b);
+
+// interface
+interface MyOps {
+  add: [{ a: number; b: number }, number];
+  //   ^^^^^^^^^^^^^^^^ input     ^ output
+}
+
+type OpFromMyOps<T extends keyof MyOps> = Op</* refer Input */, /* refer Output */>
+
+send<OpFromMyOps<'add'>>('add', { a: 1, b: 2 });
+register<OpFromMyOps<'add'>>('add', ({ a, b }) => a + b);
+```
diff --git a/packages/common/infra/src/op/__tests__/consumer.spec.ts b/packages/common/infra/src/op/__tests__/consumer.spec.ts
new file mode 100644
index 0000000000000..0a317e836c5f1
--- /dev/null
+++ b/packages/common/infra/src/op/__tests__/consumer.spec.ts
@@ -0,0 +1,185 @@
+import { afterEach } from 'node:test';
+
+import { Observable } from 'rxjs';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { OpConsumer, transfer } from '../consumer';
+import type { MessageHandlers } from '../message';
+import { Op } from '../types';
+
+declare module 'vitest' {
+  interface TestContext {
+    consumer: OpConsumer;
+    handlers: MessageHandlers;
+    postMessage: ReturnType<typeof vi.fn>;
+  }
+}
+
+class AddOp extends Op<{ a: number; b: number }, number> {
+  protected override getId(): string {
+    return 'add';
+  }
+}
+class AnyOp extends Op<any, any> {
+  protected override getId(): string {
+    return 'any';
+  }
+}
+
+describe('op producer', () => {
+  beforeEach(ctx => {
+    const { port2 } = new MessageChannel();
+    // @ts-expect-error patch postMessage
+    port2.postMessage = vi.fn(port2.postMessage);
+    // @ts-expect-error patch postMessage
+    ctx.postMessage = port2.postMessage;
+    ctx.consumer = new OpConsumer(port2);
+    // @ts-expect-error internal api
+    ctx.handlers = ctx.consumer.handlers;
+    vi.useFakeTimers();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it('should throw if no handler registered', async ctx => {
+    ctx.handlers.call(new AddOp({ a: 1, b: 2 }).toCallMessage()[0]);
+    await vi.advanceTimersToNextTimerAsync();
+    expect(ctx.postMessage.mock.lastCall).toMatchInlineSnapshot(`
+      [
+        {
+          "error": [Error: Handler for operation [AddOp] is not registered.],
+          "id": "add",
+          "type": "return",
+        },
+      ]
+    `);
+  });
+
+  it('should handle call message', async ctx => {
+    ctx.consumer.register(AddOp, ({ a, b }) => a + b);
+
+    const op = new AddOp({ a: 1, b: 2 });
+    ctx.handlers.call(op.toCallMessage()[0]);
+    await vi.advanceTimersToNextTimerAsync();
+    expect(ctx.postMessage.mock.calls[0][0]).toMatchInlineSnapshot(`
+      {
+        "data": 3,
+        "id": "add",
+        "type": "return",
+      }
+    `);
+  });
+
+  it('should handle cancel message', async ctx => {
+    ctx.consumer.register(AddOp, ({ a, b }, { signal }) => {
+      const { reject, resolve, promise } = Promise.withResolvers<number>();
+
+      signal?.addEventListener('abort', () => {
+        reject(new Error('canceled'));
+      });
+
+      setTimeout(() => {
+        resolve(a + b);
+      }, Number.MAX_SAFE_INTEGER);
+
+      return promise;
+    });
+
+    const op = new AddOp({ a: 1, b: 2 }).toCallMessage()[0];
+    ctx.handlers.call(op);
+    ctx.handlers.cancel({ type: 'cancel', id: op.id });
+
+    await vi.advanceTimersByTimeAsync(1);
+
+    expect(ctx.postMessage.mock.calls).toMatchInlineSnapshot(`
+      [
+        [
+          {
+            "error": [Error: canceled],
+            "id": "add",
+            "type": "return",
+          },
+        ],
+      ]
+    `);
+  });
+
+  it('should transfer transferables in return', async ctx => {
+    const data = new Uint8Array([1, 2, 3]);
+    const nonTransferred = new Uint8Array([4, 5, 6]);
+
+    ctx.consumer.register(AnyOp, () => {
+      return transfer({ data: { data, nonTransferred } }, [data.buffer]);
+    });
+
+    const op = new AnyOp({}).toCallMessage()[0];
+    ctx.handlers.call(op);
+    await vi.advanceTimersToNextTimerAsync();
+    expect(ctx.postMessage).toHaveBeenCalledOnce();
+
+    expect(data.byteLength).toBe(0);
+    expect(nonTransferred.byteLength).toBe(3);
+  });
+
+  it('should handle subscribe message', async ctx => {
+    ctx.consumer.registerSubscribable(AnyOp, data => {
+      return new Observable(observer => {
+        data.forEach((v: number) => observer.next(v));
+        observer.complete();
+      });
+    });
+
+    const op = new AnyOp(new Uint8Array([1, 2, 3])).toSubscribeMessage()[0];
+    ctx.handlers.subscribe(op);
+    await vi.advanceTimersToNextTimerAsync();
+    expect(ctx.postMessage.mock.calls.map(call => call[0]))
+      .toMatchInlineSnapshot(`
+      [
+        {
+          "data": 1,
+          "id": "any",
+          "type": "next",
+        },
+        {
+          "data": 2,
+          "id": "any",
+          "type": "next",
+        },
+        {
+          "data": 3,
+          "id": "any",
+          "type": "next",
+        },
+        {
+          "id": "any",
+          "type": "complete",
+        },
+      ]
+    `);
+  });
+
+  it('should handle unsubscribe message', async ctx => {
+    ctx.consumer.registerSubscribable(AnyOp, data => {
+      return new Observable(observer => {
+        data.forEach((v: number) => {
+          setTimeout(() => {
+            observer.next(v);
+          }, 1);
+        });
+        setTimeout(() => {
+          observer.complete();
+        }, 1);
+      });
+    });
+
+    const op = new AnyOp(new Uint8Array([1, 2, 3])).toSubscribeMessage()[0];
+    ctx.handlers.subscribe(op);
+
+    ctx.handlers.unsubscribe({ type: 'unsubscribe', id: op.id });
+
+    await vi.advanceTimersToNextTimerAsync();
+    expect(ctx.postMessage.mock.calls).toMatchInlineSnapshot(`[]`);
+  });
+});
diff --git a/packages/common/infra/src/op/__tests__/message.spec.ts b/packages/common/infra/src/op/__tests__/message.spec.ts
new file mode 100644
index 0000000000000..677ab0fc239aa
--- /dev/null
+++ b/packages/common/infra/src/op/__tests__/message.spec.ts
@@ -0,0 +1,76 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import {
+  AutoMessageHandler,
+  ignoreUnknownEvent,
+  KNOWN_MESSAGE_TYPES,
+  type MessageCommunicapable,
+  type MessageHandlers,
+} from '../message';
+
+class CustomMessageHandler extends AutoMessageHandler {
+  public handlers: Partial<MessageHandlers> = {
+    call: vi.fn(),
+    cancel: vi.fn(),
+    subscribe: vi.fn(),
+    unsubscribe: vi.fn(),
+    return: vi.fn(),
+    next: vi.fn(),
+    error: vi.fn(),
+    complete: vi.fn(),
+  };
+}
+
+declare module 'vitest' {
+  interface TestContext {
+    sendPort: MessageCommunicapable;
+    receivePort: MessageCommunicapable;
+    handler: CustomMessageHandler;
+  }
+}
+
+describe('message', () => {
+  beforeEach(ctx => {
+    const listeners: ((event: MessageEvent) => void)[] = [];
+    ctx.sendPort = {
+      postMessage: (msg: any) => {
+        listeners.forEach(listener => {
+          listener(new MessageEvent('message', { data: msg }));
+        });
+      },
+      addEventListener: vi.fn(),
+      removeEventListener: vi.fn(),
+    };
+
+    ctx.receivePort = {
+      postMessage: vi.fn(),
+      addEventListener: vi.fn((_event, handler) => {
+        listeners.push(handler);
+      }),
+      removeEventListener: vi.fn(),
+    };
+    ctx.handler = new CustomMessageHandler(ctx.receivePort);
+    ctx.handler.listen();
+  });
+
+  it('should ignore unknown message type', ctx => {
+    const handler = vi.fn();
+    // @ts-expect-error internal api
+    ctx.handler.handleMessage = ignoreUnknownEvent(handler);
+
+    ctx.sendPort.postMessage('connected');
+    ctx.sendPort.postMessage({ type: 'call1' });
+    ctx.sendPort.postMessage(new Uint8Array());
+    ctx.sendPort.postMessage(null);
+    ctx.sendPort.postMessage(undefined);
+
+    expect(handler).not.toHaveBeenCalled();
+  });
+
+  it('should handle known message type', async ctx => {
+    for (const type of KNOWN_MESSAGE_TYPES) {
+      ctx.sendPort.postMessage({ type });
+      expect(ctx.handler.handlers[type]).toBeCalled();
+    }
+  });
+});
diff --git a/packages/common/infra/src/op/__tests__/op.spec.ts b/packages/common/infra/src/op/__tests__/op.spec.ts
new file mode 100644
index 0000000000000..48158bf3fb033
--- /dev/null
+++ b/packages/common/infra/src/op/__tests__/op.spec.ts
@@ -0,0 +1,41 @@
+import { describe, expect, it } from 'vitest';
+
+import { Op } from '../types';
+
+class AddOp extends Op<{ a: number; b: number }, number> {}
+class BinOp extends Op<Uint8Array, Uint8Array> {}
+
+describe('op', () => {
+  it('should generate call message', () => {
+    const op = new AddOp({ a: 1, b: 2 });
+    const [msg, transferables] = op.toCallMessage();
+    expect(msg.type).toBe('call');
+    expect(msg.name).toBe(AddOp.name);
+    expect(msg.payload).toEqual({ a: 1, b: 2 });
+    expect(transferables).toBeUndefined();
+  });
+
+  it('should generate unique call id', () => {
+    const op = new AddOp({ a: 1, b: 2 });
+    const [msg1, _] = op.toCallMessage();
+    const [msg2, __] = op.toCallMessage();
+    expect(msg1.id).not.toBe(msg2.id);
+  });
+
+  it('should generate subscribe message', () => {
+    const op = new BinOp(new Uint8Array([1, 2, 3]));
+    const [msg, transferables] = op.toSubscribeMessage();
+    expect(msg.type).toBe('subscribe');
+    expect(msg.name).toBe(BinOp.name);
+    expect(msg.payload).toEqual(new Uint8Array([1, 2, 3]));
+    expect(transferables).toBeUndefined();
+  });
+
+  it('should return transferables', () => {
+    const op = new BinOp(new Uint8Array([1, 2, 3]));
+    const [_, transferables] = op
+      .transfer([new Uint8Array([4, 5, 6])])
+      .toCallMessage();
+    expect(transferables).toEqual([new Uint8Array([4, 5, 6])]);
+  });
+});
diff --git a/packages/common/infra/src/op/__tests__/producer.spec.ts b/packages/common/infra/src/op/__tests__/producer.spec.ts
new file mode 100644
index 0000000000000..895394837607d
--- /dev/null
+++ b/packages/common/infra/src/op/__tests__/producer.spec.ts
@@ -0,0 +1,219 @@
+import { afterEach } from 'node:test';
+
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import type { MessageHandlers } from '../message';
+import { OpProducer } from '../producer';
+import { Op } from '../types';
+
+declare module 'vitest' {
+  interface TestContext {
+    producer: OpProducer;
+    handlers: MessageHandlers;
+    postMessage: ReturnType<typeof vi.fn>;
+  }
+}
+
+class AddOp extends Op<{ a: number; b: number }, number> {
+  protected override getId(): string {
+    return 'add';
+  }
+}
+class BinOp extends Op<Uint8Array, Uint8Array> {
+  protected override getId(): string {
+    return 'bin';
+  }
+}
+class SubOp extends Op<Uint8Array, number> {
+  protected override getId(): string {
+    return 'sub';
+  }
+}
+
+describe('op producer', () => {
+  beforeEach(ctx => {
+    const { port1 } = new MessageChannel();
+    // @ts-expect-error patch postMessage
+    port1.postMessage = vi.fn(port1.postMessage);
+    // @ts-expect-error patch postMessage
+    ctx.postMessage = port1.postMessage;
+    ctx.producer = new OpProducer(port1);
+    // @ts-expect-error internal api
+    ctx.handlers = ctx.producer.handlers;
+    vi.useFakeTimers();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it('should send call op', async ctx => {
+    // @ts-expect-error internal api
+    const pendingCalls = ctx.producer.pendingCalls;
+    const result = ctx.producer.call(new AddOp({ a: 1, b: 2 }));
+
+    expect(ctx.postMessage.mock.calls[0][0]).toMatchInlineSnapshot(`
+      {
+        "id": "add",
+        "name": "AddOp",
+        "payload": {
+          "a": 1,
+          "b": 2,
+        },
+        "type": "call",
+      }
+    `);
+    expect(pendingCalls.has('add')).toBe(true);
+
+    // fake consumer return
+    ctx.handlers.return({ type: 'return', id: 'add', data: 3 });
+
+    await expect(result).resolves.toBe(3);
+
+    expect(pendingCalls.has('add')).toBe(false);
+  });
+
+  it('should transfer transferables with call op', async ctx => {
+    const data = new Uint8Array([1, 2, 3]);
+    const result = ctx.producer.call(new BinOp(data).transfer([data.buffer]));
+
+    expect(ctx.postMessage.mock.calls[0][1].transfer[0]).toBeInstanceOf(
+      ArrayBuffer
+    );
+
+    // fake consumer return
+    ctx.handlers.return({
+      type: 'return',
+      id: 'bin',
+      data: new Uint8Array([3, 2, 1]),
+    });
+
+    await expect(result).resolves.toEqual(new Uint8Array([3, 2, 1]));
+    expect(data.byteLength).toBe(0);
+  });
+
+  it('should cancel call', async ctx => {
+    const promise = ctx.producer.call(new AddOp({ a: 1, b: 2 }));
+
+    promise.cancel();
+
+    expect(ctx.postMessage.mock.lastCall).toMatchInlineSnapshot(`
+      [
+        {
+          "id": "add",
+          "type": "cancel",
+        },
+      ]
+    `);
+
+    await expect(promise).rejects.toThrow('canceled');
+  });
+
+  it('should timeout call', async ctx => {
+    const promise = ctx.producer.call(new AddOp({ a: 1, b: 2 }));
+
+    vi.advanceTimersByTime(4000);
+
+    await expect(promise).rejects.toThrow('timeout');
+  });
+
+  it('should send subscribe op', async ctx => {
+    let ob = {
+      next: vi.fn(),
+      error: vi.fn(),
+      complete: vi.fn(),
+    };
+
+    // @ts-expect-error internal api
+    const subscriptions = ctx.producer.obs;
+    ctx.producer.subscribe(new SubOp(new Uint8Array([1, 2, 3])), ob);
+
+    expect(ctx.postMessage.mock.calls[0][0]).toMatchInlineSnapshot(`
+      {
+        "id": "sub",
+        "name": "SubOp",
+        "payload": Uint8Array [
+          1,
+          2,
+          3,
+        ],
+        "type": "subscribe",
+      }
+    `);
+    expect(subscriptions.has('sub')).toBe(true);
+
+    // fake consumer return
+    ctx.handlers.next({ type: 'next', id: 'sub', data: 1 });
+    ctx.handlers.next({ type: 'next', id: 'sub', data: 2 });
+    ctx.handlers.next({ type: 'next', id: 'sub', data: 3 });
+
+    expect(subscriptions.has('sub')).toBe(true);
+
+    ctx.handlers.complete({ type: 'complete', id: 'sub' });
+
+    expect(ob.next).toHaveBeenCalledTimes(3);
+    expect(ob.complete).toHaveBeenCalledTimes(1);
+
+    expect(subscriptions.has('sub')).toBe(false);
+    expect(ctx.postMessage.mock.lastCall).toMatchInlineSnapshot(`
+      [
+        {
+          "id": "sub",
+          "type": "unsubscribe",
+        },
+      ]
+    `);
+
+    // smoking
+    ob = {
+      next: vi.fn(),
+      error: vi.fn(),
+      complete: vi.fn(),
+    };
+    ctx.producer.subscribe(new SubOp(new Uint8Array([1, 2, 3])), ob);
+
+    expect(subscriptions.has('sub')).toBe(true);
+
+    ctx.handlers.next({ type: 'next', id: 'sub', data: 1 });
+    ctx.handlers.error({ type: 'error', id: 'sub', error: new Error('test') });
+
+    expect(ob.next).toHaveBeenCalledTimes(1);
+    expect(ob.error).toHaveBeenCalledTimes(1);
+
+    expect(subscriptions.has('sub')).toBe(false);
+  });
+
+  it('should transfer transferables with subscribe op', async ctx => {
+    const data = new Uint8Array([1, 2, 3]);
+    const unsubscribe = ctx.producer.subscribe(
+      new BinOp(data).transfer([data.buffer]),
+      {
+        next: vi.fn(),
+      }
+    );
+
+    expect(data.byteLength).toBe(0);
+
+    unsubscribe();
+  });
+
+  it('should unsubscribe subscription op', ctx => {
+    const unsubscribe = ctx.producer.subscribe(
+      new SubOp(new Uint8Array([1, 2, 3])),
+      {
+        next: vi.fn(),
+      }
+    );
+
+    unsubscribe();
+
+    expect(ctx.postMessage.mock.lastCall).toMatchInlineSnapshot(`
+      [
+        {
+          "id": "sub",
+          "type": "unsubscribe",
+        },
+      ]
+    `);
+  });
+});
diff --git a/packages/common/infra/src/op/consumer.ts b/packages/common/infra/src/op/consumer.ts
new file mode 100644
index 0000000000000..81f277469b8e7
--- /dev/null
+++ b/packages/common/infra/src/op/consumer.ts
@@ -0,0 +1,222 @@
+import EventEmitter2 from 'eventemitter2';
+import type { Observable, Subscription } from 'rxjs';
+
+import {
+  AutoMessageHandler,
+  type CallMessage,
+  type MessageHandlers,
+  type ReturnMessage,
+  type SubscribeMessage,
+  type SubscriptionCompleteMessage,
+  type SubscriptionErrorMessage,
+  type SubscriptionNextMessage,
+} from './message';
+import type { Op, OpInput, OpOutput } from './types';
+
+interface OpCallContext {
+  consumer: OpConsumer;
+  signal?: AbortSignal;
+}
+
+export type OpHandler<OpType extends Op<any, any>> = (
+  payload: OpInput<OpType>,
+  ctx: OpCallContext
+) => Promise<OpOutput<OpType>> | OpOutput<OpType>;
+
+export type OpSubscribableHandler<OpType extends Op<any, any>> = (
+  payload: OpInput<OpType>,
+  ctx: OpCallContext
+) => Observable<OpOutput<OpType>>;
+
+const TRANSFERABLES_CACHE = new Map<any, Transferable[]>();
+export function transfer<T>(data: T, transferables: Transferable[]): T {
+  TRANSFERABLES_CACHE.set(data, transferables);
+  return data;
+}
+function fetchTransferables(data: any): Transferable[] | undefined {
+  const transferables = TRANSFERABLES_CACHE.get(data);
+  if (transferables) {
+    TRANSFERABLES_CACHE.delete(data);
+  }
+
+  return transferables;
+}
+
+export class OpConsumer extends AutoMessageHandler {
+  private readonly eventBus = new EventEmitter2();
+
+  private readonly registeredOpHandlers = new Map<
+    string,
+    OpHandler<Op<any, any>>
+  >();
+
+  private readonly registeredSubscribableOpHandlers = new Map<
+    string,
+    OpSubscribableHandler<Op<any, any>>
+  >();
+
+  private readonly processing = new Map<string, AbortController>();
+  private readonly subscriptions = new Map<string, Subscription>();
+
+  override get handlers() {
+    return {
+      call: this.handleCallMessage,
+      cancel: this.handleCancelMessage,
+      subscribe: this.handleSubscribeMessage,
+      unsubscribe: this.handleUnsubscribeMessage,
+    };
+  }
+
+  private readonly handleCallMessage: MessageHandlers['call'] = async msg => {
+    const abortController = new AbortController();
+    this.processing.set(msg.id, abortController);
+
+    try {
+      this.eventBus.emit(`before:${msg.name}`, msg.payload);
+      const ret = await this.call(msg, abortController.signal);
+      this.eventBus.emit(`after:${msg.name}`, msg.payload, ret);
+      const transferables = fetchTransferables(ret);
+      this.port.postMessage(
+        {
+          type: 'return',
+          id: msg.id,
+          data: ret,
+        } satisfies ReturnMessage,
+        { transfer: transferables }
+      );
+    } catch (e) {
+      if (!this.processing.has(msg.id)) {
+        return;
+      }
+
+      this.port.postMessage({
+        type: 'return',
+        id: msg.id,
+        error: e as any,
+      } satisfies ReturnMessage);
+    } finally {
+      this.processing.delete(msg.id);
+    }
+  };
+
+  private readonly handleCancelMessage: MessageHandlers['cancel'] = msg => {
+    const abortController = this.processing.get(msg.id);
+    if (!abortController) {
+      return;
+    }
+
+    abortController.abort();
+  };
+
+  private readonly handleSubscribeMessage: MessageHandlers['subscribe'] =
+    msg => {
+      try {
+        const subscription = this.ob$(msg).subscribe({
+          next: data => {
+            const transferables = fetchTransferables(data);
+            this.port.postMessage(
+              {
+                type: 'next',
+                id: msg.id,
+                data,
+              } satisfies SubscriptionNextMessage,
+              { transfer: transferables }
+            );
+          },
+          error: error => {
+            this.port.postMessage({
+              type: 'error',
+              id: msg.id,
+              error: error as Error,
+            } satisfies SubscriptionErrorMessage);
+          },
+          complete: () => {
+            this.port.postMessage({
+              type: 'complete',
+              id: msg.id,
+            } satisfies SubscriptionCompleteMessage);
+          },
+        });
+
+        subscription.add(() => {
+          this.subscriptions.delete(msg.id);
+        });
+        this.subscriptions.set(msg.id, subscription);
+      } catch (e) {
+        this.port.postMessage({
+          type: 'error',
+          id: msg.id,
+          error: e as Error,
+        } satisfies SubscriptionErrorMessage);
+      }
+    };
+
+  private readonly handleUnsubscribeMessage: MessageHandlers['unsubscribe'] =
+    msg => {
+      const subscription = this.subscriptions.get(msg.id);
+      if (!subscription) {
+        return;
+      }
+
+      subscription.unsubscribe();
+    };
+
+  register<T extends Op<any, any>>(
+    op: { new (...args: any[]): T },
+    handler: OpHandler<T>
+  ) {
+    this.registeredOpHandlers.set(op.name, handler);
+  }
+
+  registerSubscribable<T extends Op<any, any>>(
+    op: { new (...args: any[]): T },
+    handler: OpSubscribableHandler<T>
+  ) {
+    this.registeredSubscribableOpHandlers.set(op.name, handler);
+  }
+
+  before<T extends Op<any, any>>(
+    op: { new (...args: any[]): T },
+    handler: (input: OpInput<T>) => void
+  ) {
+    this.eventBus.on(`before:${op.name}`, handler);
+  }
+
+  after<T extends Op<any, any>>(
+    op: { new (...args: any[]): T },
+    handler: (input: OpInput<T>, output: OpOutput<T>) => void
+  ) {
+    this.eventBus.on(`after:${op.name}`, handler);
+  }
+
+  /**
+   * @internal
+   */
+  async call(op: CallMessage, signal: AbortSignal) {
+    const handler = this.registeredOpHandlers.get(op.name);
+    if (!handler) {
+      throw new Error(`Handler for operation [${op.name}] is not registered.`);
+    }
+
+    return handler(op.payload, { consumer: this, signal });
+  }
+
+  /**
+   * @internal
+   */
+  ob$(op: SubscribeMessage): Observable<OpOutput<Op<any, any>>> {
+    const handler = this.registeredSubscribableOpHandlers.get(op.name);
+    if (!handler) {
+      throw new Error(`Handler for operation [${op.name}] is not registered.`);
+    }
+
+    return handler(op.payload, { consumer: this });
+  }
+
+  destroy() {
+    this.registeredOpHandlers.clear();
+    this.registeredSubscribableOpHandlers.clear();
+    this.processing.clear();
+    this.subscriptions.clear();
+  }
+}
diff --git a/packages/common/infra/src/op/index.ts b/packages/common/infra/src/op/index.ts
new file mode 100644
index 0000000000000..1bd6f3ebf75ab
--- /dev/null
+++ b/packages/common/infra/src/op/index.ts
@@ -0,0 +1,4 @@
+export * from './consumer';
+export type { MessageCommunicapable } from './message';
+export * from './producer';
+export * from './types';
diff --git a/packages/common/infra/src/op/message.ts b/packages/common/infra/src/op/message.ts
new file mode 100644
index 0000000000000..e2289576b5848
--- /dev/null
+++ b/packages/common/infra/src/op/message.ts
@@ -0,0 +1,140 @@
+const PRODUCER_MESSAGE_TYPES = [
+  'call',
+  'cancel',
+  'subscribe',
+  'unsubscribe',
+] as const;
+const CONSUMER_MESSAGE_TYPES = ['return', 'next', 'error', 'complete'] as const;
+export const KNOWN_MESSAGE_TYPES = new Set([
+  ...PRODUCER_MESSAGE_TYPES,
+  ...CONSUMER_MESSAGE_TYPES,
+]);
+
+type MessageType =
+  | (typeof PRODUCER_MESSAGE_TYPES)[number]
+  | (typeof CONSUMER_MESSAGE_TYPES)[number];
+
+export interface Message {
+  type: MessageType;
+}
+
+// in
+export interface CallMessage extends Message {
+  type: 'call';
+  id: string;
+  name: string;
+  payload: any;
+}
+
+export interface CancelMessage extends Message {
+  type: 'cancel';
+  id: string;
+}
+
+export interface SubscribeMessage extends Message {
+  type: 'subscribe';
+  id: string;
+  name: string;
+  payload: any;
+}
+
+export interface UnsubscribeMessage extends Message {
+  type: 'unsubscribe';
+  id: string;
+}
+
+// out
+export type ReturnMessage = {
+  type: 'return';
+  id: string;
+} & (
+  | {
+      data: any;
+    }
+  | {
+      error: Error;
+    }
+);
+
+export interface SubscriptionNextMessage extends Message {
+  type: 'next';
+  id: string;
+  data: any;
+}
+
+export interface SubscriptionErrorMessage extends Message {
+  type: 'error';
+  id: string;
+  error: Error;
+}
+
+export type SubscriptionCompleteMessage = {
+  type: 'complete';
+  id: string;
+};
+
+export type Messages =
+  | CallMessage
+  | CancelMessage
+  | SubscribeMessage
+  | UnsubscribeMessage
+  | ReturnMessage
+  | SubscriptionNextMessage
+  | SubscriptionErrorMessage
+  | SubscriptionCompleteMessage;
+
+export type MessageHandlers = {
+  [Type in Messages['type']]: (
+    message: Extract<Messages, { type: Type }>
+  ) => void;
+};
+
+export type MessageCommunicapable = Pick<
+  MessagePort,
+  'postMessage' | 'addEventListener' | 'removeEventListener'
+> & {
+  start?(): void;
+  close?(): void;
+};
+
+export function ignoreUnknownEvent(handler: (data: Messages) => void) {
+  return (event: MessageEvent<Message>) => {
+    const data = event.data;
+
+    if (
+      !data ||
+      typeof data !== 'object' ||
+      typeof data.type !== 'string' ||
+      !KNOWN_MESSAGE_TYPES.has(data.type)
+    ) {
+      return;
+    }
+
+    handler(data as any);
+  };
+}
+
+export abstract class AutoMessageHandler {
+  protected abstract handlers: Partial<MessageHandlers>;
+
+  constructor(protected readonly port: MessageCommunicapable) {}
+
+  protected handleMessage = ignoreUnknownEvent((msg: Messages) => {
+    const handler = this.handlers[msg.type];
+    if (!handler) {
+      return;
+    }
+
+    handler(msg as any);
+  });
+
+  listen() {
+    this.port.addEventListener('message', this.handleMessage);
+    this.port.start?.();
+  }
+
+  close() {
+    this.port.close?.();
+    this.port.removeEventListener('message', this.handleMessage);
+  }
+}
diff --git a/packages/common/infra/src/op/producer.ts b/packages/common/infra/src/op/producer.ts
new file mode 100644
index 0000000000000..a765d7bd70f89
--- /dev/null
+++ b/packages/common/infra/src/op/producer.ts
@@ -0,0 +1,126 @@
+import { Observable, type Observer } from 'rxjs';
+
+import {
+  AutoMessageHandler,
+  type CancelMessage,
+  type MessageHandlers,
+  type UnsubscribeMessage,
+} from './message';
+import type { Op } from './types';
+
+export interface CancelablePromise<T> extends Promise<T> {
+  cancel(): void;
+}
+
+export class OpProducer extends AutoMessageHandler {
+  private readonly pendingCalls = new Map<string, PromiseWithResolvers<any>>();
+  private readonly obs = new Map<string, Observer<any>>();
+
+  protected override get handlers() {
+    return {
+      return: this.handleReturnMessage,
+      next: this.handleSubscriptionNextMessage,
+      error: this.handleSubscriptionErrorMessage,
+      complete: this.handleSubscriptionCompleteMessage,
+    };
+  }
+
+  private readonly handleReturnMessage: MessageHandlers['return'] = msg => {
+    const pending = this.pendingCalls.get(msg.id);
+    if (!pending) {
+      return;
+    }
+
+    if ('error' in msg) {
+      pending.reject(msg.error);
+    } else {
+      pending.resolve(msg.data);
+    }
+    this.pendingCalls.delete(msg.id);
+  };
+
+  private readonly handleSubscriptionNextMessage: MessageHandlers['next'] =
+    msg => {
+      const ob = this.obs.get(msg.id);
+      if (!ob) {
+        return;
+      }
+
+      ob.next(msg.data);
+    };
+
+  private readonly handleSubscriptionErrorMessage: MessageHandlers['error'] =
+    msg => {
+      const ob = this.obs.get(msg.id);
+      if (!ob) {
+        return;
+      }
+
+      ob.error(msg.error);
+    };
+
+  private readonly handleSubscriptionCompleteMessage: MessageHandlers['complete'] =
+    msg => {
+      const ob = this.obs.get(msg.id);
+      if (!ob) {
+        return;
+      }
+
+      ob.complete();
+    };
+
+  call<In, Out>(op: Op<In, Out>): CancelablePromise<Out> {
+    const promiseWithResolvers = Promise.withResolvers<Out>();
+    const [msg, transferables] = op.toCallMessage();
+
+    const raise = (reason: string) => {
+      promiseWithResolvers.reject(new Error(reason));
+      this.pendingCalls.delete(msg.id);
+    };
+
+    const promise = promiseWithResolvers.promise as CancelablePromise<Out>;
+
+    promise.cancel = () => {
+      this.port.postMessage({
+        type: 'cancel',
+        id: msg.id,
+      } satisfies CancelMessage);
+
+      raise('canceled');
+    };
+
+    setTimeout(() => {
+      raise('timeout');
+    }, 3000 /* TODO: make it configurable */);
+
+    this.port.postMessage(msg, { transfer: transferables });
+    this.pendingCalls.set(msg.id, promiseWithResolvers);
+
+    return promise;
+  }
+
+  subscribe<In, Out>(
+    op: Op<In, Out>,
+    observer: Partial<Observer<Out>> | ((value: Out) => void)
+  ): () => void {
+    const [msg, transferables] = op.toSubscribeMessage();
+
+    const sub = new Observable<Out>(ob => {
+      this.obs.set(msg.id, ob);
+    }).subscribe(observer);
+
+    sub.add(() => {
+      this.obs.delete(msg.id);
+      this.port.postMessage({
+        type: 'unsubscribe',
+        id: msg.id,
+      } satisfies UnsubscribeMessage);
+    });
+
+    this.port.postMessage(msg, { transfer: transferables });
+
+    return () => {
+      sub.unsubscribe();
+    };
+  }
+}
diff --git a/packages/common/infra/src/op/types.ts b/packages/common/infra/src/op/types.ts
new file mode 100644
index 0000000000000..ee18064b7b526
--- /dev/null
+++ b/packages/common/infra/src/op/types.ts
@@ -0,0 +1,48 @@
+import type { CallMessage, SubscribeMessage } from './message';
+
+export class Op<In, Out> {
+  // type holder
+  protected readonly _out?: Out;
+  private transferables?: Transferable[];
+
+  constructor(public readonly payload: In) {}
+
+  protected getId() {
+    return Math.random().toString(36).slice(2, 9);
+  }
+
+  transfer(transferables: Transferable[]) {
+    this.transferables = transferables;
+    return this;
+  }
+
+  toCallMessage(): [CallMessage, Transferable[] | undefined] {
+    return [
+      {
+        type: 'call',
+        id: this.getId(),
+        name: this.constructor.name,
+        payload: this.payload,
+      },
+      this.transferables,
+    ];
+  }
+
+  toSubscribeMessage(): [SubscribeMessage, Transferable[] | undefined] {
+    return [
+      {
+        type: 'subscribe',
+        id: this.getId(),
+        name: this.constructor.name,
+        payload: this.payload,
+      },
+      this.transferables,
+    ];
+  }
+}
+
+export type OpInput<OpType extends Op<any, any>> =
+  OpType extends Op<infer In, any> ? (In extends void ? never : In) : never;
+
+export type OpOutput<OpType extends Op<any, any>> =
+  OpType extends Op<any, infer Out> ? Out : never;