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Tag for content related to software performance.

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Redis vs Dragonfly: A Hands-On Comparison

Real-world migration test on default stacks

Redis vs Dragonfly: A Hands-On Comparison

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Comments 7
8 min read
Don't Assume Your Cloud T4 Runs at Spec: Gemma 4 Decode Falls 7% as the Card Warms

Datasheets miss sustained thermal drift

Don't Assume Your Cloud T4 Runs at Spec: Gemma 4 Decode Falls 7% as the Card Warms

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Comments 2
11 min read
Rediscovering the Schwartzian Transform: Why I Had to Comment on a Flutter Performance Article

Rediscovering the Schwartzian Transform: Why I Had to Comment on a Flutter Performance Article

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Comments 2
7 min read
Bun 1.4's bun test --parallel cuts a 4-second suite to about 1 second

Real-world limits and worker scaling behavior

Bun 1.4's bun test --parallel cuts a 4-second suite to about 1 second

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Comments 10
7 min read
Django 6.1's PBKDF2 default change rewrites existing password hashes on next login

Exposes a bug that downgrades hardened hashes

Django 6.1's PBKDF2 default change rewrites existing password hashes on next login

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Comments 5
7 min read
Node.js 26's default Temporal API fixes a one-hour DST drift that Date still has

Benchmarking reveals a 19x performance cost

Node.js 26's default Temporal API fixes a one-hour DST drift that Date still has

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Comments 18
7 min read
INP and Partytown: give the main thread back to your users

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

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Comments
13 min read
Changing def to async def let one blocking call freeze an entire FastAPI app

Changing def to async def let one blocking call freeze an entire FastAPI app

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Comments 3
8 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

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Comments 8
6 min read
PostgreSQL 19 beta's parallel autovacuum launches workers but leaves vacuum time unchanged

PostgreSQL 19 beta's parallel autovacuum launches workers but leaves vacuum time unchanged

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Comments 2
7 min read
Valkey 9.2's forkless BGSAVE cuts my memory spike from 350MB to 10MB

Valkey 9.2's forkless BGSAVE cuts my memory spike from 350MB to 10MB

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Comments 4
7 min read
The 7 Walls JavaScript Hits — and How WebAssembly Gets Past Them

Real production use cases and WebGPU insights

The 7 Walls JavaScript Hits — and How WebAssembly Gets Past Them

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Comments 41
7 min read
Two Iceberg Clients, One Protocol: Where the Time Goes

Two Iceberg Clients, One Protocol: Where the Time Goes

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Comments
9 min read
ParadeDB's pg_search 0.26 cuts a ten-term BM25 search from 129ms to 29ms

Comes with a 5x slowdown on single-term queries

ParadeDB's pg_search 0.26 cuts a ten-term BM25 search from 129ms to 29ms

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Comments 5
8 min read
PostgreSQL 19's REPACK CONCURRENTLY swaps a five-second table lock for one under a second

PostgreSQL 19's REPACK CONCURRENTLY swaps a five-second table lock for one under a second

9
Comments
6 min read
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