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Caching, Queues & Background Jobs
Caching strategies, job queues, retries, and background processing patterns.
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Olson and Söderqvist Discuss Valkey’s Evolution and Future Past Caching Use Cases at OSS EU
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A request limit cannot cap your LLM bill. Reserve tokens in Redis
1+ day, 4+ hour ago (967+ words) One request can be a one-line question. Another starts an agent run that makes a dozen model calls, each resending a longer context than the last. A request limit counts both as one. The obvious fix is to count tokens…...
Designing a URL Shortener: Architecture, Base62, Redis Caching & Scaling
1+ day, 6+ hour ago (1637+ words) A URL shortener sounds like one of the simplest backend systems to build. Take a long URL: Generate a short code: Store the mapping, and redirect anyone who visits the short URL. Three operations. One database table. A few API…...
Redis by proxy: Percona targets the last major hurdle to Valkey adoption
1+ day, 7+ hour ago (682+ words) When Redis changed its licensing in 2024, replacing its permissive BSD license with proprietary, source-available alternatives, it prompted a major split in the community. Within days, the Linux Foundation launched Valkey, an open source fork. While Redis did subsequently change course…...
Redis Watchdog: Fast Cache, Slow Excuses
1+ day, 9+ hour ago (886+ words) Redis is fast. The incident meeting explaining why nobody noticed it stopped is considerably less so. Lap one: “It’s probably the network.” Lap two: “Has anyone checked Redis?” Lap three: a senior engineer opens a terminal, performs one command, and…...
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1+ day, 14+ hour ago (537+ words) Adding Redis caching to a Django application often looks like an easy win: a slow endpoint, a Redis instance, and suddenly response times drop from seconds to milliseconds. Django and django-redis make the mechanics straightforward enough that a junior engineer…...
Why KV Cache Exists, and What It’s Used For
1+ day, 21+ hour ago (162+ words) Every time an LLM generates a token, it has to remember what came before. KV caching exists so it doesn’t have to recompute that memory from scratch. An LLM doesn’t write its answer all at once. It generates one token…...
Valkey embraces evolution beyond its Redis roots
3+ day, 1+ hour ago (290+ words) “Everybody needs a caching engine. But most people don’t choose where they operate their applications or databases based on the caching engine,” says Kyle Davis, General Manager, Redis-Valkey Ecosystem at Percona. “It doesn’t really make sense for three independent companies…...