An image depicting Rails caching evolution from ‘Cache Version 1’ to ‘Cache Version 2’. ‘Version 1’ is shown as a basic, static structure, while ‘Version 2’ appears advanced and vibrant. The transition is visually represented by a morphing effect, with colors evolving from muted to bright, highlighting the progress and enhanced capabilities in Rails caching.
“Evolving Efficiency: From Cache Version 1 to 2 in Rails” — A visual journey of caching technology’s advancement in Rails, showcasing the transformation from simplicity to sophistication.

Utilizing Versioned Cache in Rails: A Comprehensive Guide

Alessio Bussolari
3 min readDec 18, 2023


Caching is a crucial aspect of web application development in Rails, used to store frequently accessed data and improve performance. Versioned caching is an advanced technique that helps maintain cache consistency, especially important in scenarios where data changes frequently. This guide covers how to effectively use versioned caching in Rails.

Understanding Versioned Caching

Versioned caching in Rails allows you to tie cache keys to specific versions of data. When the data changes, the version changes, thereby invalidating the old cache and ensuring that stale data is not served.

Implementing Versioned Cache

Setting Up Cache Store:

Ensure you have a cache store configured in your Rails application. Rails supports several cache stores like Memcache, Redis, and others.

# config/environments/production.rb
config.cache_store = :memcached_store, "", ""

Using Versioned Cache Keys:

In Rails, cache keys can be versioned using the cache_versioning setting. When this is enabled, Rails will automatically maintain a version for the cache entries.



Alessio Bussolari

Ruby on Rails programmer since 2009. Current CTO at COSMIC SRL, where I lead the team in creating innovative solutions.