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PostgreSQL: What is a checkpoint?

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PostgreSQL: What is a checkpoint?

Checkpoints are a core concept in PostgreSQL. However, many people don’t know what they actually are, nor do they understand how to tune checkpoints to reach maximum efficiency. This post will explain both checkpoints and checkpoint tuning, and will hopefully shed some light on these vital database internals.

How PostgreSQL writes data

Before we talk about checkpoints in more detail, it is important to understand how PostgreSQL writes data…

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