PostgreSQL 18's new io_max_concurrency caps per-process I/O operations in flight.

`effective_io_concurrency` has changed what it means twice—from a harmonic-series spindle count to a direct request depth to a real async I/O control.

The database is fully functional — it can store data, run SQL, use indexes, and survive crashes. But it’s missing three things that make a database a database: Transactions: grouping multiple...

JEP 533, Structured Concurrency, has reached integrated status for JDK 27. It refines exception handling and type safety in its API, particularly focusing on exception flow with a new...

An overview of lockless optimistic concurrency control feature introduced for MySQL JSON Duality Views in version 9.4.

An overview of lockless optimistic concurrency control feature introduced for MySQL JSON Duality Views in version 9.4.

ESLint 于 2025 年合并了多线程 linting 功能，解决了十年来的性能问题，使大型项目的 lint 速度提升超过 30%。新增的 concurrency 属性默认关闭，需谨慎使用以避免增加开销。

Reducing replication lag with IO concurrency in Postgres 15 PostgreSQL 15 improves crash recovery and physical replication performance of some large and very busy databases by trying to minimise...

The concurrency features that are included in the Rust standard library are quite similar to what was available in C++11: threads, atomics, mutexes, condition variables, and so on. In the past few...

TL;DR: “Structured concurrency” refers to a way to structure async computations so that child operations are guaranteed to complete before their parents, just the way a function is guaranteed to...