In-memory key-value store in C, Go and Python

Re:In-memory key-value store in C, Go and Python by codeape on Wednesday March 21, 2012 @06:02AM (#3733723)

I changed memg.py to use sockfile.write()/.flush() instead of socket.sendall().

This makes the memg.py server > x100 faster. It outperforms a gevent-based implementation by 10%.

See https://github.com/codeape2/Key-Value-Polyglot/commit/cbc53a...

EDIT: It does not outperform the gevent-based implementation. More performance testing indicates that gevent is around 2x faster. But it outperforms the original version by an order of magnitude.

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Re:In-memory key-value store in C, Go and Python by irahul on Wednesday March 21, 2012 @06:09AM (#3733730)

sock.sendall() isn't the same as `sock.send(); sock.flush()`

sendall will look something like:

    def sendall(sock, msg):
        totalsent = 0
        MSGLEN = len(msg)
        while totalsent < MSGLEN:
            sent = sock.send(msg[totalsent:])
            if sent == 0:
                raise RuntimeError("socket connection broken")
            totalsent = totalsent + sent

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Re:In-memory key-value store in C, Go and Python by codeape on Wednesday March 21, 2012 @06:27AM (#3733764)

I don't use socket.send/flush. I use sockfile.write/flush.

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