WordPress Cache Benchmarks

Benchmarks for object cache plugins. For plugins that have other options like page caches and acceleration, those are disabled in the benchmarks. We benchmark only the plugin with its object cache.

Running Benchmarks

Running the benchmarks requires installing Nix. You can enter a development shell via nix develop, or automatically using direnv.

You should run the benchmarks in a disposable Linux VM with no access to secrets.

After starting a development shell, you can run the default benchmarks via just bench. This runs a series of 5000 random requests using each plugin and each backend that that plugin supports.

You can run specific benchmarks via just bench -c <name>. See finefile --help for a full list of options.

Benchmark setups

• just bench: 5000 requests to a default WordPress install
• just bench-posts: 5000 requests to a WordPress install with 1000 posts added
• just bench-products: 5000 requests to a WooCommerce install with 1000 products added

Running Dev Environment

You can start a development server with the same setup as a benchmark by running just dev <name>. WordPress will be available at http://locahost:8888/wp-admin/

Editing Benchmarks

Benchmarks are defined in finefile.toml.

Other benchmark setups are based finefile.toml, but they override values in finefile-posts.toml and finefile-products.toml.

Benchmarks

See benchmark setups for server configuration options.

The available benchmarks are:

WordPress's built-in object cache:

• no-cache-plugins

LiteSpeed Cache, an all-in-one acceleration and caching plugin. The page cache is disabled so that we test only the object cache:

• litespeed-memcached configured with memcached backend
• litespeed-redis configured with redis backend

Redis Cache:

• redis-cache

SnapCache:

• snapcache-memcached configured with memcached backend

SQLite Object Cache:

• sqlite-object-cache default configuration without APCu cache
• sqlite-object-cache-apcu with APCu cache

WP Redis:

• wp-redis