Surya DigitalCurious about how PostgreSQL manages concurrent transactions?
Here is a blog post that breaks down the crucial concept of transaction isolation levels in PostgreSQL. It explains the different levels—`READ COMMITTED`, `REPEATABLE READ`, and `SERIALIZABLE` and the specific anomalies (like dirty reads and phantom reads) each one prevents.
Read the full blog here: https://surya-digital.com/blog/2025-09-03/transaction-isolation-level-in-postgre-sql
Surya Digital - Transaction Isolation Level In PostgreSQL
Most developers assume they know what `READ COMMITTED`, `REPEATABLE READ`, and `SERIALIZABLE` really mean, but PostgreSQL’s MVCC engine has a few surprises in store. This blog unpacks the real behavior behind each isolation level, exposes the anomalies they allow (and why), and shows how PostgreSQL bends the classic SQL-92 model in clever, performance-conscious ways. If you care about data consistency, concurrent transactions, or why `SERIALIZABLE` isn’t just a buzzword, this is the deep dive you didn’t know you needed.