diff --git a/README.md b/README.md
index beebba0..f50f86f 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,6 @@
 
 CustomMetrics is a NodeJS library to emit and query custom metrics for AWS apps.
 
->CustomMetrics is under active development and is not (yet) ready for production use. This README documentation is incomplete. All feedback is welcome.
-
 ## Background
 
 AWS CloudWatch offers metrics to monitor specific aspects of your apps that are not covered by the default AWS infrastructure metrics. 
diff --git a/src/index.ts b/src/index.ts
index 2203ee9..dbcacf6 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -419,25 +419,12 @@ export class CustomMetrics {
             (buffer.count && elt.count >= buffer.count) ||
             this.timestamp >= elt.timestamp
         ) {
-            /* KEEP
-            this.log.trace(
-                `Emit buffered metric ${namespace}/${metricName} = ${point.sum}, sum ${elt.sum} count ${
-                    elt.count
-                } remaining ${elt.timestamp - this.timestamp}`
-            ) */
             point.timestamp = elt.timestamp
             await this.emitDimensionedMetric(namespace, metricName, point, dimensions, options)
         }
         elt.count += point.count
         elt.sum += point.sum
 
-        /* KEEP
-        this.log.trace(
-            `Buffer metric ${namespace}/${metricName} = sum ${elt.sum} count ${elt.count}, remaining ${
-                elt.timestamp - this.timestamp
-            }`, {buffers: this.buffers}
-        ) */
-
         CustomMetrics.saveInstance({key}, this)
         return {
             spans: [{points: [{count: elt.count, sum: elt.sum}]}],
@@ -1102,9 +1089,9 @@ export class CustomMetrics {
     }
 
     /*
-        UNDOCUMENTED DEPRECATED
         Allocate a CustomMetrics instance from the cache
      */
+    //REMOVE
     static allocInstance(tags: object, options: MetricOptions = {}) {
         let key = JSON.stringify(tags)
         let metrics = Instances[key]
@@ -1114,6 +1101,7 @@ export class CustomMetrics {
         return metrics
     }
 
+    //REMOVE
     static freeInstance(tags: object) {
         let key = JSON.stringify(tags)
         delete Instances[key]
@@ -1123,6 +1111,7 @@ export class CustomMetrics {
         delete Instances[key]
     }
 
+    //REMOVE
     static getInstance(tags: object) {
         let key = JSON.stringify(tags)
         return Instances[key]
@@ -1133,6 +1122,7 @@ export class CustomMetrics {
         Instances[key] = metrics
     }
 
+    //REMOVE
     static getCache() {
         return Instances
     }
diff --git a/test/cache.ts b/test/cache.ts
deleted file mode 100644
index 70d7fa0..0000000
--- a/test/cache.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
-    cache.ts - CustomMetrics instance cache
-
-    UNDOCUMENTED AND DEPRECATED
- */
-import {client, table, CustomMetrics} from './utils/init'
-
-// jest.setTimeout(7200 * 1000)
-
-test('Alloc', async () => {
-    let tags = {name: 'primary'}
-    let metrics = CustomMetrics.allocInstance(tags, {client, table, log: true})
-    expect(metrics).toBeDefined()
-    expect(metrics instanceof CustomMetrics).toBe(true)
-    expect(typeof metrics.emit == 'function').toBe(true)
-
-    let inst = CustomMetrics.getInstance(tags)
-    expect(inst).toEqual(metrics)
-
-    let cache = CustomMetrics.getCache()
-    expect(cache).toBeDefined()
-    expect(Object.keys(cache).length).toBe(1)
-    expect(cache[JSON.stringify(tags)]).toEqual(metrics)
-
-    inst = CustomMetrics.allocInstance(tags)
-    expect(inst).toEqual(metrics)
-    cache = CustomMetrics.getCache()
-    expect(Object.keys(cache).length).toBe(1)
-    CustomMetrics.flushAll()
-
-    CustomMetrics.freeInstance(tags)
-    inst = CustomMetrics.getInstance(tags)
-    expect(inst).toBeUndefined()
-    expect(cache).toBeDefined()
-    expect(Object.keys(cache).length).toBe(0)
-
-    CustomMetrics.freeInstanceByKey('unknown')
-})
\ No newline at end of file