https://cachee.ai/blog Technical insights on caching, performance optimization, and infrastructure from Cachee.ai en-us Thu, 26 Mar 2026 18:15:53 GMT https://cachee.ai/blog/posts/2026-03-26-five-caching-features-nobody-else-has-built-and-why-they-matter https://cachee.ai/blog/posts/2026-03-26-five-caching-features-nobody-else-has-built-and-why-they-matter CDC auto-invalidation, native vector search, cache triggers, cross-service coherence, and cost-aware eviction. Five capabilities that don Thu, 26 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-26-cachee-enterprise-140-redis-commands-native-in-rust-zero-dependencies https://cachee.ai/blog/posts/2026-03-26-cachee-enterprise-140-redis-commands-native-in-rust-zero-dependencies 140+ Redis commands running natively in Rust — hashes, sorted sets, lists, streams, geospatial indexes, HyperLogLog, bitmaps, vector search, Lua scripting, transactions, pub/sub, CDC, and cache triggers. All at 0.0015ms per operation. Zero external dependencies. Thu, 26 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-25-we-built-a-redis-compatible-data-engine-in-rust-heres-why https://cachee.ai/blog/posts/2026-03-25-we-built-a-redis-compatible-data-engine-in-rust-heres-why 50+ native Redis commands running in-process at sub-microsecond latency. Hashes, sorted sets, lists, Lua scripting, transactions — zero external dependencies. Here Wed, 25 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-why-your-kubernetes-pods-are-slow-the-distributed-cache-problem https://cachee.ai/blog/posts/2026-03-24-why-your-kubernetes-pods-are-slow-the-distributed-cache-problem Your Kubernetes pods are fast in isolation but P99 spikes to 200ms+ under load. The bottleneck isn Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-the-sidecar-cache-pattern-why-service-mesh-teams-are-adding-l1-caches https://cachee.ai/blog/posts/2026-03-24-the-sidecar-cache-pattern-why-service-mesh-teams-are-adding-l1-caches Istio handles traffic routing, mTLS, and observability. But it doesn Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-should-you-use-redis-or-dynamodb-dax-for-caching https://cachee.ai/blog/posts/2026-03-24-should-you-use-redis-or-dynamodb-dax-for-caching Redis and DynamoDB DAX solve different caching problems. This comparison breaks down latency, lock-in, eviction control, and the L1 layer that makes both faster. Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-serverless-cold-starts-why-your-lambda-is-slow-and-how-caching-fixes-it https://cachee.ai/blog/posts/2026-03-24-serverless-cold-starts-why-your-lambda-is-slow-and-how-caching-fixes-it Your Lambda takes 3 seconds on first invocation, 200ms after. Every scale-up creates new cold instances. An external L1 cache layer eliminates the cold start penalty while keeping serverless benefits. Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-redis-vs-momento-vs-upstash-serverless-cache-comparison-2026 https://cachee.ai/blog/posts/2026-03-24-redis-vs-momento-vs-upstash-serverless-cache-comparison-2026 A head-to-head comparison of Redis, Momento, and Upstash for serverless caching in 2026. Pricing at every scale, P50/P99 latency benchmarks, and the architectural layer all three are missing. Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-redis-slowlog-explained-find-and-fix-your-slowest-commands https://cachee.ai/blog/posts/2026-03-24-redis-slowlog-explained-find-and-fix-your-slowest-commands Your Redis instance is fast — until you check the SLOWLOG. Most production Redis instances have commands taking 10-100ms hiding in plain sight. Here Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-redis-keys-command-in-production-the-performance-killer-you-didnt-know-about https://cachee.ai/blog/posts/2026-03-24-redis-keys-command-in-production-the-performance-killer-you-didnt-know-about The Redis KEYS command is O(n) and blocks the entire server while it runs. In production with millions of keys, it freezes Redis for seconds. Here Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-redis-8-vs-valkey-81-the-2026-benchmark-nobody-asked-for https://cachee.ai/blog/posts/2026-03-24-redis-8-vs-valkey-81-the-2026-benchmark-nobody-asked-for We tested Redis 8 and Valkey 8.1 on identical c7g.xlarge hardware for 48 hours with an 80/20 Zipfian workload. Both hit ~950K ops/sec. The 5% difference between them is noise compared to the 667x difference an L1 layer provides. Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-postgresql-cache-hit-ratio-below-99-percent-heres-your-fix https://cachee.ai/blog/posts/2026-03-24-postgresql-cache-hit-ratio-below-99-percent-heres-your-fix If your PostgreSQL buffer cache hit ratio is below 99%, your database is reading from disk instead of memory. Here Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-openai-scaled-postgresql-to-800m-users-heres-the-caching-architecture https://cachee.ai/blog/posts/2026-03-24-openai-scaled-postgresql-to-800m-users-heres-the-caching-architecture OpenAI published how they scaled PostgreSQL to serve 800 million ChatGPT users. The engineering is impressive. But the caching layer that makes it all possible is the part nobody is talking about. Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-nextjs-caching-is-broken-in-2026-heres-what-actually-works https://cachee.ai/blog/posts/2026-03-24-nextjs-caching-is-broken-in-2026-heres-what-actually-works Next.js has 6 caching layers that conflict with each other. Router Cache serves stale data. Data Cache ignores your revalidation. The new use cache directive is confusing everyone. Here Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-llm-caching-how-to-cut-api-costs-60-percent-with-semantic-cache https://cachee.ai/blog/posts/2026-03-24-llm-caching-how-to-cut-api-costs-60-percent-with-semantic-cache Every duplicate or near-duplicate prompt to GPT-4 costs $0.03-0.06. Semantic caching matches similar prompts and serves cached responses instantly, cutting LLM API costs by 40-60%. Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-how-to-add-caching-to-a-nodejs-express-api-in-5-minutes https://cachee.ai/blog/posts/2026-03-24-how-to-add-caching-to-a-nodejs-express-api-in-5-minutes Your Express API hits the database on every request. Response times are 50-200ms. Adding a cache layer takes 5 minutes and cuts response time by 10-20x. Here Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-how-much-does-caching-actually-save-a-real-roi-analysis https://cachee.ai/blog/posts/2026-03-24-how-much-does-caching-actually-save-a-real-roi-analysis We ran the numbers across 5 real scenarios — from startup to enterprise. Caching ROI ranges from 3x to 47x. Here Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-24-aws-caching-costs-compared-elasticache-vs-cloudfront-vs-dax-vs-lambda-edge https://cachee.ai/blog/posts/2026-03-24-aws-caching-costs-compared-elasticache-vs-cloudfront-vs-dax-vs-lambda-edge Side-by-side cost comparison of AWS ElastiCache, CloudFront, DAX, and Lambda@Edge at 10M, 100M, and 1B requests/month. Real pricing with hidden costs most teams miss. Tue, 24 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-your-cache-hit-rate-is-lying-to-you-what-to-measure-instead https://cachee.ai/blog/posts/2026-03-23-your-cache-hit-rate-is-lying-to-you-what-to-measure-instead An 85% cache hit rate looks healthy on the dashboard — but your users are still slow and your DB is still overloaded. Hit rate is lying by omission. Here are the 4 metrics that actually measure cache effectiveness. Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-why-your-redis-latency-spikes-at-3am-and-how-to-stop-it https://cachee.ai/blog/posts/2026-03-23-why-your-redis-latency-spikes-at-3am-and-how-to-stop-it Every night between 2-4 AM, your Redis P99 spikes from 1ms to 50ms. RDB snapshots, AOF rewrites, and TTL expiry storms are the culprits. Here Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-why-your-cache-invalidation-strategy-is-costing-you-customers https://cachee.ai/blog/posts/2026-03-23-why-your-cache-invalidation-strategy-is-costing-you-customers Static TTLs serve stale prices, stale inventory, and stale sessions to your customers. Learn why TTL-based and event-driven invalidation fail at scale, and how ML-driven per-key TTLs eliminate stale data without manual tuning. Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-we-added-caching-and-response-time-got-worse-heres-the-fix https://cachee.ai/blog/posts/2026-03-23-we-added-caching-and-response-time-got-worse-heres-the-fix You added Redis expecting 10x faster responses. Instead, P99 latency went up. Serialization overhead, network hops, cache stampedes, and double-write penalties explain why — and in-process L1 caching is the architectural fix. Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-the-real-cost-of-running-redis-in-production-2026-breakdown https://cachee.ai/blog/posts/2026-03-23-the-real-cost-of-running-redis-in-production-2026-breakdown Redis is free. Running Redis in production costs $2,000-50,000/month. Here Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-redis-vs-dragonflydb-vs-cachee-2026-benchmark-with-real-production-data https://cachee.ai/blog/posts/2026-03-23-redis-vs-dragonflydb-vs-cachee-2026-benchmark-with-real-production-data DragonflyDB claims 25x Redis throughput. Cachee claims 667x lower latency. We tested all three on identical hardware with real production workloads over 48 hours. Here are the results. Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-redis-connection-pool-exhaustion-the-fix-that-doesnt-require-more-nodes https://cachee.ai/blog/posts/2026-03-23-redis-connection-pool-exhaustion-the-fix-that-doesnt-require-more-nodes Redis connection pool exhaustion causes cascading timeouts under load. Learn why increasing pool size or adding nodes are band-aids, and how L1 in-process caching eliminates 99% of connections entirely. Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-how-we-cut-our-elasticache-bill-from-4200-to-1400-per-month https://cachee.ai/blog/posts/2026-03-23-how-we-cut-our-elasticache-bill-from-4200-to-1400-per-month Our 6-node r6g.xlarge ElastiCache cluster cost $4,200/month. After adding an L1 cache layer and downsizing to 2 nodes, we saved $33,600/year with zero performance degradation. Here Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-how-to-cache-graphql-without-losing-your-mind https://cachee.ai/blog/posts/2026-03-23-how-to-cache-graphql-without-losing-your-mind GraphQL is great for clients, terrible for caching. POST requests bypass HTTP caches, every query shape is unique, and nested resolvers multiply DB calls. Here Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-23-cache-warming-after-deploy-why-your-users-suffer-for-2-minutes-every-release https://cachee.ai/blog/posts/2026-03-23-cache-warming-after-deploy-why-your-users-suffer-for-2-minutes-every-release Every deploy starts with an empty cache. For 90-120 seconds, every user gets full database round-trips — 10-50ms per request instead of 1ms. Predictive pre-warming eliminates the cold start entirely. Mon, 23 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-21-why-your-elasticache-bill-is-higher-than-your-database-bill https://cachee.ai/blog/posts/2026-03-21-why-your-elasticache-bill-is-higher-than-your-database-bill You added ElastiCache to reduce database load. It worked. But now your ElastiCache bill is $4,000-8,000/month — more than the RDS instance it was supposed to protect. Here Sat, 21 Mar 2026 06:30:00 GMT Eric Beans https://cachee.ai/blog/posts/2026-03-21-why-is-redis-slow-under-load-a-production-troubleshooting-guide https://cachee.ai/blog/posts/2026-03-21-why-is-redis-slow-under-load-a-production-troubleshooting-guide Redis is fast until it isn Sat, 21 Mar 2026 06:30:00 GMT Eric Beans