InfoQ Homepage Redis Content on InfoQ
-
Olson and Söderqvist Discuss Valkey’s Evolution and Future Past Caching Use Cases at OSS EU
Valkey is a growing project, launched as a fork of Redis over two years ago, supported by twelve maintainers and nine committee members from various companies. Recent developments include enhanced throughput, improved cluster functionality, and plans for features like synchronous replication and tiered storage. The project also emphasises security and release efficiency through automation.
-
Agoda Replaces 72-Shard SQL Server Price Cache with DragonflyDB
Agoda migrated its 1.5 TB hotel Price Cache from 72 SQL Server shards to DragonflyDB to handle growing read and write volumes. The migration used staged dual reads, parity validation, gradual traffic shifting, and decentralized failover detection. Agoda reports an approximately eightfold reduction in P99 read latency, with two DragonflyDB clusters providing high availability.
-
Canva Shares S3 Based Architecture for Session Revocation across Hundreds of Millions of Sessions
Canva redesigned session revocation infrastructure to support 100M active sessions while reducing database lookups. The architecture uses Amazon S3 for durable revocation records and distributes compact, in-memory indexes to application gateways. Canva said the design improved deployment speed, reduced database infrastructure requirements, and cut the revocation cache memory footprint by 87.5%.
-
Expedia Uses AI-Driven Service Telemetry Analyzer to Accelerate Incident Investigation
Expedia Group has introduced STAR, an internal AI-assisted observability platform that helps engineers investigate production incidents using service telemetry and LLMs. Built with FastAPI, Datadog, Celery, Redis, and Langfuse, STAR follows structured workflows to analyze telemetry, generate root cause assessments, and support incident response while keeping engineers in the loop.
-
AWS Introduces Durable Storage Option for ElastiCache for Valkey
AWS has recently introduced durability for Amazon ElastiCache for Valkey, enabling reliable data retention across failures and expanding support beyond caching to persistent workloads. The feature offers new options that prioritize either minimizing data loss or maintaining lower write latency, expanding the range of use cases supported by the Redis fork.
-
Figma Builds In-House Redis Proxy to Hit Six Nines Uptime
Figma has published a detailed account of how it built an in-house Redis proxy service called FigCache, replacing a fragmented caching stack that had become a liability for site availability. The system, described in a post by Kevin Lin, has been in production since the second half of 2025 and has delivered what the company describes as six nines of uptime across its caching layer.
-
Karrot Improves Conversion Rates by 70% with New Scalable Feature Platform on AWS
Karrot replaced its legacy recommendation system with a scalable architecture that leverages various AWS services. The company sought to address challenges related to tight coupling, limited scalability, and poor reliability in its previous solution, opting instead for a distributed, event-driven architecture built on top of scalable cloud services.
-
Reddit Migrates Comment Backend from Python to Go Microservice to Halve Latency
Reddit has rebuilt its core backend, migrating Comments, Accounts, Posts, and Subreddits from a legacy Python monolith to Go microservices. The migration improves performance, halves critical write latency, and modernizes the platform for future scalability while preserving correctness across multiple datastores.
-
Valkey 9.0 Introduces Multi-Database Clustering, Atomic Slot Migration, and Major Performance Gains
The Linux Foundation has announced the general availability of Valkey 9.0, the open-source in-memory storage solution developed as a successor to Redis. The latest major version introduces atomic slot migrations, hash field expiration, and full support for numbered databases in cluster mode, enabling scaling to 2,000 nodes and achieving over 1 billion requests per second.
-
Airbnb Adds Adaptive Traffic Control to Manage Key Value Store Spikes
Airbnb upgraded Mussel, its multi-tenant key-value store, replacing static per-client rate limits with an adaptive, resource-aware traffic control system. The redesign ensures resilience during traffic spikes, protects critical workflows, and maintains fair usage across thousands of tenants while scaling efficiently.
-
Redis Critical Remote Code Execution Vulnerability Discovered after 13 Years
Redis recently released a security advisory regarding CVE-2025-49844. This critical (CVSS 10.0) use-after-free (UAF) vulnerability in Lua scripting could allow authenticated attackers to execute remote code on older versions of Redis and Valkey with Lua scripting enabled. Developers are urged to upgrade to patched releases as soon as possible.
-
Uber Achieves 150M Reads per Second with CacheFront Improvements
Uber has updated its CacheFront architecture to handle over 150 million reads per second. The new design improves consistency and reduces stale reads by integrating Flux for MySQL binlog tailing, enhancing the storage engine, and introducing Cache Inspector for monitoring and optimization.
-
Pogocache: Open Source Caching Software with Low Latency and Multiple Wire Protocols
A new open-source caching software, Pogocache, recently reached 1.0 general availability, focusing on low latency and CPU efficiency. Pogocache supports multiple popular protocols while claiming better throughput and lower latency than other open-source caching alternatives.
-
Grab Switches from SQS and Redis to Temporal for Its Subscription Platform
Grab based the new architecture for GrabUnlimited on Temporal. The company enhanced user experience and reduced production incidents by 80% for its subscription platform, which serves millions of users. The new architecture significantly improved robustness and scalability, addressing a range of issues with the previous solution.
-
Redis Returns to Open Source under AGPL License: Is It Too Late?
Redis 8 has recently hit general availability, switching to the AGPLv3 license. A year after leaving its open source roots to challenge cloud service providers and following the birth of Valkey, Redis has rehired its creator and moved back to an open source license.