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Tag for content related to software performance.

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API Performance Testing: How to Design Realistic Tests

Real-world traffic rules and root-cause pains

API Performance Testing: How to Design Realistic Tests

121
Picked as gem Comments 76
10 min read
Progressive Disclosure: What, Where, When, and Why

Traces AGENTS.md history to modern harness paths

Progressive Disclosure: What, Where, When, and Why

22
Picked as gem Comments 15
7 min read
I Spawned 1000000 Goroutines. Here's Where 13 GB of RAM Went.

Stack growth creates hidden OOM risks

I Spawned 1000000 Goroutines. Here's Where 13 GB of RAM Went.

49
Comments 4
11 min read
I Added One Key to a PHP Array. It Cost 25 MB of Memory

Reveals PHP hash table internals on version 8.4

I Added One Key to a PHP Array. It Cost 25 MB of Memory

42
Picked as gem Comments 16
16 min read
INP and Partytown: give the main thread back to your users

INP and Partytown: give the main thread back to your users

3
Comments
13 min read
Caddy 2.11's default post-quantum key exchange sends six times more handshake bytes

Packet size crosses a TCP boundary

Caddy 2.11's default post-quantum key exchange sends six times more handshake bytes

12
Comments 8
6 min read
SQLite 3.53's self-healing index only repairs the rows you write to

Comments debate integrity check behaviors

SQLite 3.53's self-healing index only repairs the rows you write to

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Comments 5
9 min read
Valkey 9.1's hash field TTL triples memory use for the pattern its own docs show

Valkey 9.1's hash field TTL triples memory use for the pattern its own docs show

10
Comments 3
8 min read
A Million Go Map Entries Take 38MB, Not 16MB

A Million Go Map Entries Take 38MB, Not 16MB

40
Comments 3
17 min read
Postgres 19's REPACK rewrites a bloated table without locking out your writers

Postgres 19's REPACK rewrites a bloated table without locking out your writers

14
Comments 1
10 min read
Web Workers in JavaScript: The Complete Guide

Web Workers in JavaScript: The Complete Guide

19
Comments 3
10 min read
Git 2.55's reftable backend creates 10,000 refs in 40ms instead of 650ms

High concurrency reveals unexpected lock failures

Git 2.55's reftable backend creates 10,000 refs in 40ms instead of 650ms

12
Comments 14
7 min read
PostgreSQL 19's data checksums can now be switched on without stopping the server

Benchmark shows minimal write throughput impact

PostgreSQL 19's data checksums can now be switched on without stopping the server

14
Comments 2
7 min read
Django 6.1's FETCH_PEERS collapses a 2,001-query loop into 2

Django 6.1's FETCH_PEERS collapses a 2,001-query loop into 2

6
Comments 1
7 min read
Embedding versions management, TOAST and bloating in PostgreSQL

Embedding versions management, TOAST and bloating in PostgreSQL

1
Comments 2
6 min read
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