PostgreSQL Performance

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PostgreSQL Performance

How is the transaction model implemented in PostgreSQL?

How is the transaction model implemented in PostgreSQL? In PostgreSQL, transactions are implemented using the Multi-Version Concurrency Control (MVCC) model. This means that each transaction is given a snapshot of the database at the start […]
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PostgreSQL Performance

Understanding locks and deadlocks in PostgreSQL

Understanding locks and deadlocks in PostgreSQL Locks in PostgreSQL are used to ensure that concurrent transactions do not interfere with each other. When a transaction modifies a piece of data, it will take out an [...]
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PostgreSQL Performance

How to use Sparse Index in PostgreSQL 15?

How to use Sparse Index in PostgreSQL 15? Sparse indexes are used in PostgreSQL when the table contains many null or empty values in the indexed column. These indexes can greatly reduce the size of [...]
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PostgreSQL Performance

How I/O cache influence PostgreSQL performance?

How I/O cache influence PostgreSQL performance? I/O cache plays an important role in PostgreSQL performance as it can greatly reduce the number of disk I/O operations that need to be performed. The PostgreSQL server uses [...]
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PostgreSQL Performance

Inspecting PostgreSQL Locks

Inspecting PostgreSQL Locks Inspecting PostgreSQL locks can be done using the pg_locks view in the system catalog. This view displays information about all currently held and awaited locks. The columns in this view include the [...]
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PostgreSQL Performance

How NULL values in PostgreSQL affect performance?

How NULL values in PostgreSQL affect performance? NULL values in PostgreSQL can have an impact on the performance of queries and calculations, depending on how they are handled. Indexes: Indexes on columns that contain NULL [...]
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PostgreSQL Performance

PostgreSQL Index Maintenance and Repair

PostgreSQL Index Maintenance and Repair Index maintenance and repair are important tasks that help to keep the database running at optimal performance. In PostgreSQL, there are several methods for performing index maintenance and repair: REINDEX: [...]