What is realistic PostgreSQL write performance?

Around 1,000-1,875 TPS on high-end single node for transactional single-row writes. Drops with complexity.

How to improve PostgreSQL writes without sharding?

Tune WAL params, batch non-transactional loads with COPY, use async commits judiciously, opt for fast storage.

Should I switch from PostgreSQL for high writes?

Only if >5k TPS needed. Shard first, or try Citus/Yugabyte. Reads scale easy.

[Benchmark Bombshell] PostgreSQL Tops at 1,875 Writes/Sec in Real Tests

A 16-core beast with NVMe can't push PostgreSQL past 1,875 realistic transactional writes per second. That's the harsh truth benchmarks won't tell you.

Open Source Beat Apr 16, 2026 4 min read

PostgreSQL benchmark graph showing 1,875 TPS ceiling on high-end hardware

⚡ Key Takeaways

Realistic PostgreSQL writes max at ~1,875 TPS on top hardware — far from 100k/sec hype. 𝕏
Benchmarks skip indexes, locks, durability; model your actual transactional workload. 𝕏
Reads scale well with replicas; writes demand sharding or alternatives like Cosmos DB. 𝕏

Written by

Ibrahim Samil Ceyisakar

Founder and Editor in Chief. Technology entrepreneur tracking AI, digital business, and global market trends.

#PostgreSQL #benchmarks #database scaling #transactional writes #write performance

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Originally reported by Dev.to

⚡ Key Takeaways

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Ibrahim Samil Ceyisakar

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