Sessions in v3
· 6 min read
If you used sessions in Fiber v2, forget everything. Fiber v3 replaced the session system entirely. The store-based API is gone. Sessions are now middleware - you register them once and they are available on every request through the context.
This sounds like a small change. It is not. The new approach changes how you initialize sessions, how you access them in handlers, and how you handle the interaction between sessions and other middleware like CSRF. If you migrate without understanding the new model, you will spend hours debugging session data that silently disappears.