Why Caching Matter More Than You Think

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The rollback plan should exist before the rollout plan is approved. Feature flags are debt with an expiration date you must actually enforce. A boring deploy pipeline is a feature, not a lack of ambition.

Getting started

Logs answer questions you knew to ask; traces answer the ones you did not. We wrote the migration twice: once to learn, once to ship. Caches are easy to add and surprisingly hard to remove.

Our on-call rotation improved the day we deleted half of the alerts. Every retry needs a budget, otherwise it is just a slower outage.

Context

Small pull requests get real reviews, large ones get approvals. Our on-call rotation improved the day we deleted half of the alerts. We measured first, and the bottleneck was not where anyone expected.

The fastest query is the one you never send, but the second fastest has a good index. Small pull requests get real reviews, large ones get approvals.

Lessons

Latency percentiles tell a story that averages politely hide. Most production incidents start as a small assumption nobody wrote down. Security is mostly about saying no to defaults that were convenient in 2010.

Security is mostly about saying no to defaults that were convenient in 2010. Latency percentiles tell a story that averages politely hide.

We measured first, and the bottleneck was not where anyone expected. Every retry needs a budget, otherwise it is just a slower outage.

Comments

One response to “Why Caching Matter More Than You Think”

  1. Could you share more details on the second section?

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