Eng [upd]: Keydb

When benchmarking KeyDB, be aware that the standard redis-benchmark tool is single‑threaded and too slow to properly stress a multi‑threaded KeyDB instance. Use a multi‑threaded benchmarking tool such as memtier_benchmark for accurate results.

A powerful testament to the KeyDB engine's capabilities is its adoption by , the parent company of Snapchat. At the end of 2021, KeyDB found its permanent home at Snap, where it powers a major part of the backend caching layer. Snap's commitment to open source meant that all of KeyDB's advancements, including previously monetized features, are now shared with the community under a BSD-3 license.

NVMe storage is significantly cheaper per gigabyte than DRAM. keydb eng

Compare to other databases (like DragonFly or Redis) Configure Active-Active replication for your environment Optimize FLASH storage settings for cost-efficiency

Applications experiencing heavy load, such as real-time analytics, gaming, or high-volume messaging systems, benefit from KeyDB's ability to handle parallel requests. When benchmarking KeyDB, be aware that the standard

The engineering effort has paid off handsomely. Early benchmarks showed a single KeyDB instance achieving just over five times more operations per second than a single Redis instance, with nearly five times lower latency. Even when running with a single thread, KeyDB holds about a five percent performance advantage over Redis, thanks to careful optimisations in the codebase.

KeyDB runs the core event loop concurrently across multiple threads. Network I/O, serialization protocol parsing, and query execution are distributed across all configured server-threads . When a client establishes a connection, it is assigned to a specific thread on accept() . At the end of 2021, KeyDB found its

KeyDB ships with its own CLI client, which is fully compatible with Redis commands:

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version: "3.9" services: keydb: image: eqalpha/keydb:latest ports: - "6379:6379" volumes: - ./data:/data - ./conf/keydb.conf:/etc/keydb/keydb.conf:ro command: keydb-server /etc/keydb/keydb.conf --requirepass $KEYDB_PASSWORD healthcheck: test: ["CMD-SHELL", "keydb-cli -a $$KEYDB_PASSWORD -p 6379 PING | grep -q PONG"] interval: 10s timeout: 3s retries: 10

KeyDB is not the only NoSQL database on the market, and it's essential to compare it with other popular options. Here's a brief comparison with other NoSQL databases: