Percolator: Large-scale Incremental Processing Using Distributed Transactions and Notifications

September 28, 2023 · 1137 words · 3 min · Distributed System Transaction Paper Reading

It has been a while since I last studied, and I wanted to learn something interesting. This time, I’ll be covering Percolator, a distributed transaction system. I won’t translate the paper or delve into detailed algorithms; I’ll just document my understanding.

Distributed Transactions

May 20, 2021 · 1097 words · 6 min · Architecture Microservice Transaction

Transactions and Distributed Transactions

Transactions

A transaction is a logical unit of work in a database, composed of a finite sequence of database operations. The database must ensure the atomicity of transaction operations: when a transaction is successful, it means that all operations in the transaction have been fully executed; if the transaction fails, all executed SQL operations are rolled back.