Articles by Shiv Iyer

About Shiv Iyer

Open Source Database Systems Engineer with a deep understanding of Optimizer Internals, Performance Engineering, Scalability and Data SRE. Shiv currently is the Founder, Investor, Board Member and CEO of multiple Database Systems Infrastructure Operations companies in the Transaction Processing Computing and ColumnStores ecosystem. He is also a frequent speaker in open source software conferences globally.

Configuring PostgreSQL for optimal UNDO and REDO operations

To configure PostgreSQL for optimal UNDO and REDO operations, you must consider several configuration parameters that directly control the behavior of the database engine. Specifically, these parameters determine how PostgreSQL manages transaction logging and recovery, […]

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

Delving Into MySQL Performance: Unraveling Query Execution With Performance Schema

Understanding Query Execution with Performance Schema As the scale and complexity of database workloads continue to increase, consequently, understanding the nuances of query execution becomes essential for MySQL Database Administrators (DBAs) and Developers. In this […]

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 to troubleshoot thread contention happening to Linux Server?

Linux Thread Contention: How to Troubleshoot? Tip: Troubleshooting Linux thread contention often demands collaboration. Therefore, involve developers, system administrators, and performance engineers early to resolve issues efficiently and holistically.

How is Cache Eviction implemented in InnoDB?

Understanding InnoDB Buffer Pool Management InnoDB manages cache eviction using an algorithm similar to the Least Recently Used (LRU) algorithm. However, this method is more complex than a simple LRU due to a feature called […]

Troubleshooting Flush Locks in InnoDB

InnoDB Flush Locks InnoDB writes data to disk by using a method called “fuzzy checkpointing,” which spreads out writes to avoid sudden I/O bursts and maintain performance. However, under certain circumstances, such as when there […]