Vacuum Processing
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What is Vacuum Processing?
Vacuum processing is an essential aspect of maintaining the performance and stability of a PostgreSQL database. PostgreSQL uses a storage technique called Multi-Version Concurrency Control (MVCC), which allows multiple transactions to access different versions of a database object simultaneously. This results in the creation of multiple "dead" rows whenever a row is updated or deleted. Vacuum processing helps in cleaning up these dead rows and reclaiming storage space, preventing the database from becoming bloated and inefficient.
Free resources to learn Vacuum Processing
More in stage 12: SQL Query Patterns / Anti-patterns
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Vacuum Processing: common questions
Can I learn Vacuum Processing in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Vacuum Processing in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Vacuum Processing tutorial for beginners?
It is lesson 122 of 170 in the free PostgreSQL roadmap, in stage 12, SQL Query Patterns / Anti-patterns. If you are new to PostgreSQL, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.