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.

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PostgreSQL Index Bloat: How Large Indexes Corrupt Execution Plans

Large indexes in PostgreSQL can corrupt execution plans by causing the query planner to choose suboptimal plans due to the cost of scanning the large index. When the size of an index exceeds the effective_cache_size […]

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PostgreSQL15 Replication Lag: Reducing It with IO Concurrency

PostgreSQL 15 introduced a new feature called “asynchronous commit”, which can help reduce replication lag by allowing multiple transactions to be committed concurrently. This feature works by allowing the server to continue processing new transactions […]

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PostgreSQL Contention: Troubleshooting Thread Contention

Thread contention in PostgreSQL occurs when multiple threads are competing for the same resources, such as CPU time, disk I/O, or database locks. This can lead to performance degradation, slower response times, and even database […]

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How do we Troubleshoot PostgreSQL Contention in MinervaDB?

In PostgreSQL, the catalog tables are system tables that store metadata information about the database objects such as tables, indexes, functions, and users. The catalog tables can be used to troubleshoot contention issues by providing […]

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PostgreSQL Shared Buffers: Understanding the Implementation

In PostgreSQL, shared buffers serve as the shared memory pool used to cache data pages in memory to improve read performance. Whenever a query needs to access data, it checks if the required pages are […]

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Understanding MariaDB Indexing

Indexes in MariaDB are implemented as data structures that allow faster data retrieval from tables. There are several types of indexes available in MariaDB, each with its own characteristics and use cases. Here’s an overview […]

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RocksDB Bloom Filter: How a Global Mobile Ad Network Built Fraud Management with MinervaDB MyRocks

The fraudulent traffic and clicks can result in significant revenue loss for mobile ad networks. Advertisers pay for ad impressions and clicks that are not actually driving real business value, and the mobile ad network […]

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MySQL Redo Log IO Operations: Troubleshooting in MySQL 8

Introduction Redo log file IO operations can significantly impact the performance of a MySQL database. The redo log is used to recover the database after a crash or unexpected shutdown. It records all changes made […]

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Troubleshooting MySQL 8 locks and wait events, How they influence MySQL performance?

Locks and wait events can significantly impact MySQL performance as they can cause queries to wait, leading to slower response times and decreased performance. The main cause of lock and wait events is contention for […]

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PostgreSQL Explicit Locking: Why We Recommend It for Concurrent Transactions

In PostgreSQL, if explicit locking is not enforced, duplicate records can be inserted when multiple concurrent transactions try to insert the same record simultaneously. This can occur when two or more transactions are executed concurrently […]

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