How To – Postgres

How to Manage Large Datasets with Table Partitioning in PostgreSQL: Best Practices for Database Scaling

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Managing large datasets effectively is crucial in maintaining optimum database performance and scalability. As data grows, traditional methods may not cope with the sheer volume, leading to slowed query responses and maintenance headaches. PostgreSQL offers a feature called table partitioning, which allows you to break down a large table into smaller, more manageable pieces called …

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How to Use the pgTAP Extension for Effective Database Testing in PostgreSQL

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PgTAP is a powerful testing framework for PostgreSQL, utilising the database’s native PL/pgSQL and PL/SQL languages to write unit tests directly within your database environment. The extension leverages the Test Anything Protocol (TAP), which is a widely-adopted method for displaying test results. With pgTAP, you’re not only able to assert proper functioning of your database …

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How to Use Logical Replication in PostgreSQL: A Step-by-Step Guide

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Logical replication in PostgreSQL is a powerful feature that allows you to copy and synchronise data from one database to another. This process is essential for scenarios where high availability, load balancing, and real-time data analytics are required. PostgreSQL offers built-in logical replication starting from version 10, facilitating the stream of changes to a subscriber …

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How to Fix SSL Connection Errors for Aurora Postgres: Resolving Connectivity Issues

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Connecting to an Amazon Aurora PostgreSQL database securely often involves using SSL/TLS encryption. This is essential to ensure that the data transmitted between your application and the database cluster is protected against eavesdropping and man-in-the-middle attacks. However, establishing an SSL connection can sometimes result in errors that prevent a successful database link. These issues may …

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How to Diagnose PostgreSQL Replication Lag Issues: Identifying and Resolving Sync Delays

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Replication lag in PostgreSQL can manifest as a delay between when data is written to the primary server and when it’s replicated to the standby or secondary servers. This delay can be problematic for applications requiring up-to-date read replicas or for those employing complex disaster recovery strategies. The primary factors contributing to replication lag include …

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How to Address Unexpected Lock Waits in Aurora Postgres Post-Migration: Troubleshooting Best Practices

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When migrating to Aurora PostgreSQL, you may encounter unexpected lock waits. Lock waits occur when a database session requires access to a data part that another session is using, leading to significant performance issues. Understanding and resolving these waits is crucial to maintaining the efficiency and speed of your database operations post-migration. Upon completing your …

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Prevent and Fix PostgreSQL Transaction ID Wraparound: Safeguarding Database Integrity

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In PostgreSQL, the management of transaction IDs is critical to ensure the reliability and consistency of your database. Each transaction is assigned a unique identifier known as a transaction ID (TXID), but due to their finite numerical space, there is a risk of exhausting the available numbers, leading to what’s called transaction ID wraparound. If …

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How can I secure a Postgres Database

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There are several steps you can take to secure a Postgres database. Here are a few:

  1. Use a strong password for the database administrator account to prevent unauthorized access.
  2. Enable SSL connections to encrypt data transmitted between the database server and client applications.
  3. Configure your database server to listen on a private network interface or localhost, instead of all interfaces. This will prevent remote connections to the database server.
  4. Use the built-in Postgres role-based access control (RBAC) system to grant specific users access to specific database objects and operations.
  5. Regularly back up your database to protect against data loss and enable recovery in case of a disaster.
  6. Use Postgres’ built-in auditing capabilities to track and log access to the database, so you can monitor for suspicious activity and quickly identify and respond to security threats.
  7. Keep your Postgres installation and all database extensions up to date with the latest security patches to protect against known vulnerabilities.

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