This plugin is outdated and might not be supported anymore
SharDB

SharDB

Details
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This is intended for larger WordPress Network installs using an existing 1-3 character MD5 hash (by blog id) based multi-DB sharding structure. It supports 16, 256 or 4096 database shards. It also supports a separate database for blog id 1 and multiple VIP databases (home & VIP code contribution by Luke Poland).

It should support any plugin that works with (and accesses all data via) the regular WordPress database code.

It has been used to power MU version 2.7.1 through WordPress 4.8 sites and upgrade sites from 2.7.1 through to the WordPress 4.8.

A detailed installation guide can be purchased for a nominal fee.

This plugin is based on HyperDB which is the database plugin used by WordPress.com. Like HyperDB, this plugin autodetects whether a query is requesting a global or blog table.

Details

Plugin code:
shardb
Plugin version:
2.7.7
Outdated:
Yes
WP version:
4.7 or higher
PHP version:
or higher
Test up to WP version:
4.8.25
Total installations:
10
Last updated:
2014-06-29
Rating:
Times rated:
4
database
multiple
multisite
sharding