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PostgreSQL Index Bloat: Analysis and Detection

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 […]

PostgreSQL Subqueries: Replacing Aggregate Functions with Window Functions

PostgreSQL Logical Replication: Starting It 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, […]

PostgreSQL Query Hints: Influencing the Query Planner 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 […]

PostgreSQL Encryption-at-Rest: How to Implement It 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: […]

PostgreSQL Disaster Recovery Kubernetes: Simplifying Business Continuity

Introduction: In the digital age, businesses cannot afford to overlook the importance of disaster recovery. With increasing reliance on data, system outages or data loss can have catastrophic consequences, leading to significant disruptions and financial […]

PostgreSQL Isolation Levels: Building Optimal and Scalable Applications

Isolation levels in PostgreSQL play a crucial role in ensuring the consistency, performance, and scalability of your applications. By understanding and selecting the appropriate isolation level, you can develop optimal and scalable PostgreSQL-based applications. Let’s […]

PostgreSQL Statistics: How to Gather Them Only When Stale

In PostgreSQL, you can gather statistics only when they become stale by using the pg_stat_statements extension along with the track_activity_query_size configuration parameter. Follow these steps to achieve this: CREATE EXTENSION pg_stat_statements; 3. Query the pg_stat_statements […]

PostgreSQL SQL Plans: Why They Change for the Worse

In PostgreSQL, several reasons can cause SQL statement plans to worsen over time. These changes may lead to decreased query performance and unexpected behavior. Below are some common factors that contribute to deteriorating SQL statement […]

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