Question 1

How to set up Cachex in a Phoenix application?

Accepted Answer

Add Cachex to your mix.exs dependencies and start it in your application's supervision tree, as shown in the README's 'Setting Up' section for production use. This ensures proper management within your Elixir app's lifecycle.

Question 2

Cachex vs Redis for Elixir caching: which should I use?

Accepted Answer

Cachex is better for in-memory, Elixir-native caching with features like transactions and streaming, offering lower latency within the BEAM VM. Redis is preferable for persistent, cross-language caching or when you need a battle-tested distributed cache outside Elixir.

Question 3

How to handle key expiration automatically in Cachex?

Accepted Answer

Use the expire option in put operations, as demonstrated in the advanced examples, where keys can be set with a time duration in milliseconds to automatically remove stale entries.

Question 4

Can Cachex sync data to disk for persistence?

Accepted Answer

Yes, Cachex supports syncing to a local filesystem as an optional feature, but it requires explicit configuration and is not enabled by default, so you must set it up based on your durability needs.

Question 5

What's the best way to monitor cache performance in Cachex?

Accepted Answer

Cachex includes statistics gathering features, allowing you to track hit rates and usage patterns. Enable this optional feature and refer to the documentation for details on accessing and interpreting the metrics.

Question 6

How to use asynchronous writes in Cachex?

Accepted Answer

Asynchronous write operations are a built-in feature that can be enabled to perform non-blocking writes, improving responsiveness. Check the README's key features and documentation for configuration examples.

cachex

What is cachex?

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