Percona

APRIL 12, 2023

They came up with a horizontally scalable NoSQL database. Instead of relational (SQL) databases defined primarily through a hierarchy of related sets via tables and columns, their non-relational structure used a system of collections and documents. 2016: The company adds service-loaded MongoDB Professional to its mix.

Open Source 83

Open Source Programming Database Servers 83

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. top(1) showed that only the Cassandra database was consuming CPU. Amazon even provides an official [recommendation] (2021): "For EC2 instances launched on the AWS Xen Hypervisor, it's a best practice to use the tsc clock source.

Speed 126

Speed Java AWS Virtualization 126

HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. All the databases that HammerDB tests implement a form of MVCC (multi-version concurrency control). On high-performance multi-core systems all the supported databases can return performance in the many millions of transactions per minute.

Programming 67

Programming Benchmarking Virtualization C++ 67

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. top(1) showed that only the Cassandra database was consuming CPU. Amazon even provides an official [recommendation] (2021): "For EC2 instances launched on the AWS Xen Hypervisor, it's a best practice to use the tsc clock source.

Speed 40

Speed Java AWS Virtualization 40

O'Reilly

JULY 25, 2023

I guessed that maybe ChatGPT only knew about v2 since it was trained on open-source code from before September 2021 (its knowledge cutoff date) and v2 was the dominant format before that date. Right now, widely-used benchmarks for AI code generation (e.g., Right now, widely-used benchmarks for AI code generation (e.g.,

Programming 98

Programming Code Design Benchmarking 98