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How PostgreSQL uses maintenance_work_mem for VACUUM?

In PostgreSQL, the maintenance_work_mem configuration parameter controls how much memory the system allocates for maintenance operations, including VACUUM. When you run a VACUUM operation, PostgreSQL sorts and processes data pages. This process helps reclaim disk […]

Understanding WAL and WAL Writer Process in PostgreSQL

PostgreSQL Blocking Queries: Identifying and Resolving Resource Conflicts

Introduction: In a busy PostgreSQL database environment, resource conflicts can frequently arise. As a result, queries may become blocked, significantly impacting overall system performance. Therefore, identifying and resolving these blocking queries becomes a top priority […]

PostgreSQL Database Bloat Analysis: Identifying Large and Bloated Tables

Introduction: This blog post focuses on analyzing table size and bloat using the provided SQL query. Database bloat can significantly impact PostgreSQL performance, leading to increased storage requirements and slower query execution. We will explain […]

Analyzing Index Bloat in PostgreSQL

Introduction: Index bloat can significantly impact the performance and storage efficiency of a PostgreSQL database. Therefore, to identify and understand the extent of index bloat, we can use the SQL query provided below. In this […]

How does PostgreSQL I/O Work?

In PostgreSQL, I/O (Input/Output) refers to the process of reading and writing data to and from storage devices, such as hard disks or SSDs. PostgreSQL manages I/O operations to efficiently store and retrieve data. Here’s […]

How to replace subqueries containing aggregate functions in PostgreSQL with Windows functions?

How To Start Logical Replication in PostgreSQL for Specific Tables Based on a pg_dump?

Starting logical replication in PostgreSQL for specific tables based on a pg_dump involves a series of steps. Here’s a step-by-step guide: CREATE PUBLICATION my_publication FOR TABLE table1, table2, …;ALTER PUBLICATION my_publication ADD TABLE table3, table4, […]

Influencing PostgreSQL Query Planner: Understanding Query Hints and Optimizer Barriers

Are you curious why PostgreSQL lacks query hints and how you can still influence execution plans? Discover alternative techniques to force join orders in PostgreSQL and optimize query performance. Why PostgreSQL avoids query hints? Dive […]

How to implement Encryption-at-Rest for PostgreSQL in Kubernetes?

Implementing encryption-at-Rest for PostgreSQL in Kubernetes involves configuring encryption for the persistent storage where PostgreSQL data resides. Below is a step-by-step explanation of how to achieve this, along with a real-world example: apiVersion: apps/v1kind: Deploymentmetadata:name: […]

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