Nine Hours Debugging Redis Over a Missing Colon

Description

A two-panel meme using a still of Dexter Morgan and Rita Bennett on a striped living-room couch. Top caption: "When my girl needs attention but I've spent the last 9 hours debugging why our Redis cache hit ratio dropped to 0% after a deployment, only to finally trace the root cause to someone forgetting a namespace delimiter in the new key naming strategy." Dexter stares blankly in a dark blue polo; Rita cries beside him. A "DEVOPS_NK" watermark sits at the bottom. The joke is a classic post-deploy cache-miss storm: Redis keys are conventionally namespaced with colons (`user:123:profile`), so omitting the delimiter makes writers and readers use different keys and drives hit ratio to zero.