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Redis is an open-source, in-memory data store used as a database, cache, and message broker, supporting structures like strings, streams, and pub/sub.
Shopify moved stock reservation from Redis into its MySQL ledger, using one row per available unit, capped at 1,000 per item and location. A dev.to analysis says the limit that remained was how long checkout held database connections, even with fast reservation queries.
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ZoomEye queries run on 27 September counted 4.9 million services answering on Redis's default port 6379, against 142 fingerprinted as Redis. The larger figure counts reachable listeners, a list owners can check against Redis's rule that the server stay on trusted networks.
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Valkey's async I/O threads lifted throughput per process from about 200,000-250,000 to about one million requests a second, AWS's Madelyn Olson told InfoQ. The replication and slot-migration fixes in the same release line make the firmer case for taking the Redis fork seriously.
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Percona has built Valkey-proxy, an open source proxy that lets apps written for a single Redis instance connect to a Valkey Cluster without a rewrite. The work of a cluster migration moves out of application code and into a new layer that self-hosting operators have to run and monitor.
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Salvatore Sanfilippo's open-source ds4 engine runs a short list of large open-weight models locally by compressing their routed experts to about two bits. Even compressed, the supported builds need high-memory Macs or GPU systems that most people do not already own.
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Self-hosted LiveKit keeps SIP trunks in Redis, so recreating a stock Redis container wipes them and reprovisioning returns new trunk IDs. Health checks stay green until an outbound call fails on a trunk ID that no longer exists.
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Munchable's scheduler logged twelve successful cron runs in three hours on 14 September 2026 while a stale Redis lock made each one skip. Each skip answered HTTP 200, the status the platform records as a successful run whether or not any curation happened.
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Argo CD 3.5 puts mutual TLS in front of its repo-server by default, closing the unauthenticated path a July 2026 Kustomize flaw used to run commands. Clusters without their own certificates get it on upgrade, so older GitOps installs should take 3.5 as a security patch.
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Laravel apps caching whole pages in Redis can store a 1.47MB response in 169KB by turning on zstd in phpredis, a dev.to benchmark found. Every cache hit moves the full value from Redis to PHP, so the saving applies to each read as well as to memory.
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Google open-sourced AX, an Apache 2.0 runtime on Kubernetes that checkpoints idle agents and is designed to resume them in under a second. Its savings depend on how long each agent waits on models, tools or people.
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Monest's CTO kept tag-event fan-out on BullMQ, where each job goes to one worker, for two client integrations and several internal teams. A first attempt, one worker calling every consumer, replayed finished calls on retry and forced one retry count on all of them.
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Redis leases in a dev.to Go lock guide expire after 10 seconds mid-job, so a second worker takes the invoice while the first keeps running. The owner-checked release protects only the lock key, so refusing the stale worker's writes falls to the store.
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A developer scanned their own MacBook from a second machine on the same network. The parts macOS ships were invisible; the exposure that stayed open was the dev servers they had left running, wider than they thought.
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CVE-2026-91843 lets an attacker with no credentials run code as root through the login process, and Check Point has published indicators of compromise while saying it has seen no exploitation in the wild.
Perspective Coverage
4 publishersReality
Password-reset queries made up 38% of one support RAG bot's vector lookups, says a dev.to write-up that moves retrieval behind an HTTP cache. Any saving depends on identical queries repeating within one tenant inside five minutes.
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Every booking in a flash-sale seat design on dev.to runs through one atomic Redis Lua script, yet the counter still needed four separate fixes. The last one holds each booking until a Redis replica confirms the write.
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A dev.to post says the 2026-07-28 specification dropped the initialize flow and Mcp-Session-Id, so MCP requests can land on any instance. The refund agent it walks through still breaks on the second pod.
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Redis pulled four East US 2 comparisons from Azure's own retail price API and found Premium-to-Balanced moves cutting the monthly cache bill by more than two fifths. Whether that funds the migration depends on how big the bill already is.
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A dev.to walkthrough traces fork() from the cleared write bit in every PTE down to do_wp_page, where a refcount check decides whether a snapshot window costs a 4 KiB copy for each dirtied page or nothing at all.
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A dev.to build log measures the GPS endpoint of a ride-hailing platform at a 62ms median, 97 percent of it framework overhead, and finds the real ceiling in an untuned PHP-FPM worker count on an eight-core box.
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Build · September 21, 2026 · One report1 publisher