For couple of months I have been writing middlewares for database
shards, and today I made a presentation covering them. It
includes the following.
- Incline - a trigger and queue based distributed materialized
view manager
- Pacific - a set of perl scripts to manage MySQL shards, a
MySQL shard can be split into two in less than 10 seconds of
write blocking (and no read blocks)
- DBIx::ShardManager - a client API for accessing database
shards using Incline and Pacific
With these middlewares I think it is no more difficult to write
web applications that runs on database shards. In fact IMHO
it is as easy as writing a webapp that runs on a standalone
database.
The presentation slides are available from slideshare. If
you have any question or suggestions, please leave a
comment. Thank you.
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