奇怪的 PostgreSQL benchmark (看起來還沒解?)

上個禮拜在 Lobsters 上看到「Benchmarking is hard, sometimes ...」這篇,當下看到還沒解就先放著,過一個禮拜後好像還是沒解,但覺得蠻有趣的。 作者遇到的情況是在 176 cores (352 threads) 的機器上跑 pgbench,發現 22 clients 前都正常,但是超過後就卡住,但再上升到 100+ clients 的時候又莫名其妙的恢復了: 研究了蠻多東西,但看起來還是沒找到原因,應該還會繼續定時回頭看一下看看有沒有新的進展...

Gea-Suan Lin's BLOG
Supabase 打算要開發 PostgreSQL 上的 Vitess:Multigres

看到 Supabase 的「Announcing Multigres: Vitess for Postgres」這篇,找來了 Sugu Sougoumarane 來開發 PostgreSQL 上的 Vitess:「multigres」。 Vitess 是吃 MySQL 協定的 Proxy 軟體,當初 Google 與 YouTube 的團隊開發的,最重要的功能是 sharding。 這次要搞的...

Gea-Suan Lin's BLOG

MariaDB 11.8 LTS open-source RDBMS is out, featuring full MariaDB Vector support, faster backups, improved replication, and more.
https://linuxiac.com/mariadb-11-8-lts-rdbms-lands-with-vector-search/

#mariadb #mysql #opensource #rdbms

MariaDB 11.8 LTS

看到 MariaDB 11.8 LTS 出了:「MariaDB 11.8 LTS Released」。 這是第一個在 MariaDB LTS 上有 HNSW 的版本,對於 embedding 類的搜尋會方便不少,可以想到的是建立 MariaDB replica,然後就可以在上面搜相似物...

Gea-Suan Lin's BLOG
MariaDB 買 Galera Cluster?!

剛剛找資料的時候發現「MariaDB Acquires Galera Cluster」這個新聞,MariaDB 居然買下 Galera Cluster 了... Galera Cluster 當年用的是 Percona 包的版本,雖然是號稱 mult-writer,但實際上會發現預設的寫入要都在同一台,才能減少 lock,主要是當作可以很快 failover 的機制。 後來 Oracle 官方推出的 InnoDB Cluster 算是競爭對手,不過架構上差蠻多的,不算是同一種...

Gea-Suan Lin's BLOG
PostgreSQL: Using MIN/MAX on UUID columns - Italo Baeza Cabrera - Medium

I had a little beef with PostgreSQL recently. I love the database engine, but I came to understand no every database is perfect, like in this case. Due to some client’s circumstances, they’re tightly…

Medium

I'm literally just two fucking clicks away from swapping PostgreSQL to Microsoft SQL Server for a client.

Why? It supports `MAX(uuid)`.

Fuck it. I'm choosing the dark side on this one.

#Programming #SQL #Database #DB #RDBMS #Databases #WebDevelopment #SoftwareDevelopment #WebDev #PostgreSQL #Postgres

How difficult can be creating an hypertable in TimescaleDB?

It seems that pretty much of a fucking lot.

#PostgreSQL #TimescaleDB #Hypertable #Hypertables #SQL #RDBMS #RelationalDatabase #Database #Databases #Programming #SoftwareDevelopment #DatabaseDevelopment

Stop by and see our CEO @c2main present on using #Linux container groups to improve #PostgreSQL system performance and automation at #PGConfDev in #Montreal tomorrow, May 14th. He'd be happy to chat with you about questions and thoughts relating to #Postgres development, research, and projects!

#opensource #foss #oss #canada #tech #techevent #database #data #rdbms #sql #datascientist #analytics #dev