# PostgresBench: Measuring the impact of High Availability on Managed Postgres performance

DevFeed: [PostgresBench: Measuring the impact of High Availability on Managed Postgres performance](<https://devfeed.tech/articles/postgresbench-measuring-the-impact-of-high-availability-on-managed-postgres-performance-5524.md>)

Original publisher: [Read original article](<https://clickhouse.com/blog/postgresbench-ha>)

Author: Lionel Palacin; Sai Srirampur; Andrey Chudnovskiy

Published: 2026-07-21T16:13:25Z

Content type: article

Language: en

Sources: [ClickHouse Blog](<https://devfeed.tech/sources/clickhouse-blog.md>)

Topics: [Benchmark](<https://devfeed.tech/topics/benchmark.md>), [Availability](<https://devfeed.tech/topics/availability.md>), [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [clickhouse](<https://devfeed.tech/topics/clickhouse.md>), [Replication](<https://devfeed.tech/topics/replication.md>), [Cloud](<https://devfeed.tech/topics/cloud.md>)

Tags: [aws](<https://devfeed.tech/tags/aws.md>), [benchmarks](<https://devfeed.tech/tags/benchmarks.md>), [clickhouse](<https://devfeed.tech/tags/clickhouse.md>), [comparison](<https://devfeed.tech/tags/comparison.md>), [high-availability](<https://devfeed.tech/tags/high-availability.md>), [performance](<https://devfeed.tech/tags/performance.md>), [postgres](<https://devfeed.tech/tags/postgres.md>), [replication](<https://devfeed.tech/tags/replication.md>)

## AI overview

PostgresBench measures the performance cost of high-availability configurations across managed Postgres services. The article explains shared-nothing and shared-storage architectures, compares availability and durability approaches, and describes how compute resources and configurations were matched for fair benchmarking.

## Source excerpt

PostgresBench now includes HA benchmarks, comparing the performance of managed Postgres services under production-style HA configurations. This post explains the architectures behind each service and analyzes the trade-offs between availability guarantees