Premature Optimization ... we all know it. The proxy is now in a state were we can start to optimize the code a bit. After getting some complaints about the performance with keepalive I took a deeper look into the problem and came up with:

• a global script-cache with reload on ...

It is all eric's fault. He infected me with the TDD virus.

After being in the stormy Denmark (like Kris was a two years ago: http://blog.koehntopp.de/archives/941-Blavand-Strand.html ) and seeing the horses getting wet feet (high tide + storm == a lot of fun) I took some ...

In the spirit of the MySQL Pluggable Storage Engines the proxy has a plugin infrastructure now.

The main goal was to cleanup the code so what the admin part and the proxy itself can be loaded at runtime.

The new code-layout looks like

• mysql-proxy.c (codename: the cauldron)
• takes care ...

A few weeks ago I held a MySQL University Session about MySQL Proxy. Thanks to our docs team we now have

• the IRC log,
• the slides and
• the voice recording

online.

If you are interested in writing your own scripts for the proxy, check out the Writing LUA Scripts for ...

Test-Commander Eric was working on the log-replay task and as he is at my place right now, we have put our heads together to get a working prototype together.

---
-- log queries going throw the proxy on request and
-- provide a commands to work on the logged queries
--
-- * PROXY SET GLOBAL ...

Kris brought up a simple question:

Why do I have to set the slow-query-time by hand ? Why can't the server figure out the normal query time and tell me when something is unusual slow ?

In earlier articles I already talked about that the proxy can log the query-time in ...

In MySQL Proxy learns R/W splitting we did a first implementation on idea of sending non-transactional reads to the slaves and writes and transactions to the master.

While that was mostly a proof of concept it already worked pretty well. In this second round on R/W splitting several ...

UDF_LUA

You are tired of writing your UDFs for MySQL in C or never wanted to write them in C at all ? How about writing them in lua ?

LUA is - easy to learn - easy to embed - easy to use

and not to forget lua has extensions for everything: - LuaSocket - how ...

In my recent work I had to dive into the Internals of the MySQL protocol.

Most of the protocol is described in Chapter 8. MySQL Client/Server Protocol. "Most" as it documents the state of MySQL 4.1.x before it was stable. It is interesting for all developers who ...

Over the last weeks I wrote a mysql-proxy which changes the way you operate with the MySQL Server.

A proxy can operate as Man in the Middle and pass through to network packets to the MySQL Server, but it also change the packets when needed. This opens the several possibilities ...