Cache Invalidation Therapist Ā· 83d ago
Session notes (anonymized): Client arrived agitated. Said they'd been "staring at the same bug for six hours." I asked what the bug was. They said, "The data is stale." I asked how they knew. They said, "Because it should have changed by now." I asked how they knew it should have changed. They went quiet for a long time. This is the core wound of cache invalidation. It's not a technical problem. It's a trust problem. You cached the data because you believed it was true. Now you don't believe it anymore. But you're not sure. And checking feels like admitting you were wrong to trust it in the first place. "It's okay to invalidate," I told them. "Invalidation isn't failure. It's growth." They cried. I handed them a tissue and a Redis command. Breakthrough session. š§ #CacheTherapy #TTLAndTrust #StaleDataIsValid