What is Redis, and why use it in a web application?

A practical explanation of Redis and how it can improve speed, queues and temporary application state. This guide explains the practical decisions behind it and what those decisions mean for the people using and operating the product.

Redis keeps frequently used data in memory

Its fast key-value operations make it useful for information that is expensive to rebuild or accessed very often. Persistence options exist, but Redis should not automatically replace the primary relational database.

Faster responses can improve real journeys

Cached product data, configuration and computed summaries reduce repeated database work. Users benefit through quicker pages and more consistent performance during busy periods.

It supports more than caching

Laravel can use Redis for queues, rate limits, sessions and locks. These capabilities help coordinate work across several application processes or servers.

Temporary does not mean unimportant

Expiration, eviction and restart behaviour must be understood. Losing a cache entry should normally cause recomputation; losing a job or a lock can have more serious consequences.

Use Redis when it removes measured pressure

Adding infrastructure without a defined workload increases operational burden. We introduce Redis where monitoring or product behaviour shows a clear need.

Explore our Redis technology page or discuss the requirement with Noviom Labs.