When ByteMyCode was crashing because of the traffic load, we started optimizing MySQL. The server had a load of >50 but the processor was all tied up in IOWAIT. We realized that the database was the source of the bottleneck so we increased all of the cache sizes. Now, it is really fast.

This is a complete Hash table implementation for Visual Basic 6 or Visual Basic for applications. It is a complete tutorial and explains exactly how a hashtable works and the design decisions that were made for this version.