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wire 2026-08-13
stories 9
RSS Archive Reviews

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URI ENCODING GETS 10X SPEEDUP AS PHOENIX PATCHES BOOT CRASH

By RepoJournal · Filed · About Elixir & Phoenix · Composed from the cited sources · methodology

Alexander Gubarev NelsonVides preciz github-actions[bot]
4 people shipped this
Alexander Gubarev @AlexGx 2 cited NelsonVides @NelsonVides 1 cited preciz @preciz 1 cited github-actions[bot] @github-actions[bot] 1 cited

Elixir landed a massive optimization for URL encoding that hits 10x gains on empty strings, while Phoenix 1.8.11 fixes a critical startup failure.

The biggest move is a URI encoding rewrite [1] that rewrites the loop behind encode_www_form/1 and RFC 3986 query encoding, delivering dramatic speedups across the board. On an M4 Mac, empty string encoding jumped from 63.9 to 6.3 microseconds (10.15x faster), and larger payloads saw 3x to 5x improvements. The optimization splits cleanly from a proposed SWAR fast path, meaning this is the conservative win you deploy without hesitation. Meanwhile, Phoenix 1.8.11 [5] shipped a critical fix for the framework crashing on boot when Mix is available but not started, the kind of edge case that breaks CI pipelines. On the Elixir side, two bug fixes landed: struct error messages now format consistently when you pass non-atom keys [2], and Task.yield_many/2 no longer hangs when the :limit parameter exceeds the actual task count [3]. A smaller EEx optimization also landed to speed up fn block detection by scanning tokens in reverse [4].

$ ls elixir/reviews/ # the step-back reads

the week in review Phoenix rewrites every CI workflow to hardened patterns the month in review Phoenix adds CI test summary formatter
Full archive → Weekly reviews →

Quick answers

What shipped in Elixir & Phoenix on August 13, 2026?
Elixir landed a massive optimization for URL encoding that hits 10x gains on empty strings, while Phoenix 1.8.11 fixes a critical startup failure. In total, 4 commits, 4 pull requests, and 1 releases landed.
Who contributed to Elixir & Phoenix on August 13, 2026?
4 developers shipped this update, including NelsonVides, Alexander Gubarev, preciz, and github-actions[bot].
What were the notable Elixir & Phoenix updates?
Optimize URI.encode_www_form/1 and RFC 3986 query encoding, Fix struct key malformed error message, and Fix Task.yield_many/2 waits too long or forever when :limit exceeds task count (#15737).
♥

$ log Elixir & Phoenix --recent

Algorithm L replaces inside-out shuffles in Enum 3 shipped Base validation regression fixed, formatter comments stay put 16 shipped Formatter bugs that changed program meaning, and a LiveView assign that always fired 25 shipped Base validators go SWAR, formatter output stabilizes 4 shipped

$ log --all # elsewhere on the wire

Alignment & Post-training verl standardizes low-precision rollout kernels on DeepGEMM Agent Security Guardrails exposes hooks over HTTP, certifi floor raised in agent-scan

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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