This is a repo for my distributed system final project

updated at 2023/7/1

Key techniques include:

• Hadoop for data replicas and backup
• RMI for remote connection
• mySQL for username and password storage locally
• ReentrantReadWriteLock for read and write lock and consistency
• JFrame for simple GUI design

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Functionalities

This is a client-server archtecture distributed system for auction, clients are the bidders who bid for the system. The functionalities for bidders are listed as follows:

1. view the current item details(the current bidding price, name, brand)
2. bid for the item
3. log out the system

For the server, the functionalities are listed as follows:

1. process the bidding (check the current bidding price with the highest bidding price, bidding logic)
2. Timer for auction. 1 Minute for auction for each item. When a bidder has successfully bid for the system, the timer will be reset to 1 minute.
3. Timer for message. The server will send a message to all the clients every 20 seconds to remind them of the remaining time for the current item's auction.
4. Confirm the transaction. After 1-min timer ends, the system will confirm the transaction and gives the item to the highest bidder.
5. Sending public message. Whenever a bidder has bid the item successfully, or 20 seconds has passed, the server will sends a message to all the logged-in clients.
6. Sending private message. When a transaction is finally confirmed, a notification message will be sent to the client