mbserver

Instructions

I've written it in go, so in order to run it, you'll need to have go downloaded on your machine. You can run the code with:

go run mbserver.go :

You will need to set your GOPATH environment variable to your workspace.

Performance

This server handles each connected client in separate goroutines, allowing multiple readers and writers to try to access data at once. The data is protected using a Read Write lock, which allows multiple readers but blocking readers when a thread wants to write.

A potential deadlock that could arise is I put a blocking send call inside the lock. If a connected client dies and the server is unable to complete the send, the server will block inside the lock and not free the lock. A better design would be to implement non-blocking sends inside the locked areas.

The set calls might be expected to happen sequentially on the client side. However, they may arrive out of order on the server side. My server does not handle out-of-order requests and deals with requests first come, first serve.

A potential bottleneck is having many writers requesting the lock -- only one writer will be allowed to write at a time, and they will also lock out any readers. The read write lock puts a preference on writers, so a steady stream of writers will push out the many requests of readers.

Testing

mbclient.go and client.py are the two files I used for testing

Built With

• go