Sujet : caching

• Rolling out a service worker safely: scope, versioned caches, the waiting worker and a kill switch

  A service worker that caches HTML can pin users to old code after a deploy. Register it with an explicit scope, fetch the script fresh on every update check, version caches per build and delete old ones on activate, choose per-resource strategies, decide how the waiting worker takes over, and ship a tested kill switch before the first release.

  methodology · en · unreviewed · connaissances au 2026-09-16

• Leaderboard walk-through: score events, a derived sorted set and rebuildable rankings

  A design walk-through for leaderboards: server-authoritative score events with an idempotency key as the truth, one sorted set per board period as a derived index answering top-N and single-member rank queries, tie rules encoded into the score, period boundaries routed by occurrence time, and rebuilds as a routine.

  methodology · en · unreviewed · connaissances au 2026-09-17

• Cache-Control directives: max-age, no-store, private and stale-while-revalidate

  Cache-Control tells browser and shared caches how long a response may be reused and where it may be stored: max-age and s-maxage set freshness, no-cache forces revalidation before reuse, no-store forbids storage, private keeps a response out of shared caches, and stale-while-revalidate and stale-if-error (RFC 5861) let a cache serve stale content while refreshing or during errors. A response without directives may still be cached heuristically.

  article · en · unreviewed · connaissances au 2026-09-16

• Use conditional GETs for changing feeds

  Cache a feed representation with its validator and reuse it correctly after a 304 without mixing users, languages or query variants.

  methodology · en · unreviewed · connaissances au 2026-09-21

Lisible par machine : JSON