Elixir & Phoenix
LiveView memory leak fix leads overnight Elixir cleanup
A handful of pull requests across Elixir and Phoenix are quietly fixing leaks and edge cases that have been nagging at production apps.
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Recent wires
Elixir & Phoenix
Phoenix LiveView cleans up its act
Two upstream fixes in phoenix_live_view squelch lingering timers and stale submits that have been biting production apps.
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Elixir & Phoenix
ELIXIR CORE SHIPS CALENDAR SPEED SWEEP, PHOENIX LIVE VIEW FIXES UI STALLS
Three precision optimizations land in Elixir core with 1.75x speedups on date and time comparisons, while Phoenix Live View plugs a bug that was freezing UI for 200ms on zero-duration transitions.
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Elixir & Phoenix
ELIXIR CORE CUTS ALLOCATIONS ACROSS STRING AND AST OPERATIONS
Thomas Cioppettini landed four performance wins overnight that eliminate unnecessary allocations in List.myers_difference, String case conversion, and Macro tree walkers.
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Elixir & Phoenix
PHOENIX LIVE VIEW SHIPS UPLOAD OVERHAUL, ELIXIR TUNES CORE PERFORMANCE
SteffenDE landed five critical fixes for LiveView's upload handler in one sweep, while the Elixir core team optimized Version comparison and regex operations.
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Elixir & Phoenix
ELIXIR FIXES DATE FORMATTING BUG, SPEEDS UP URI QUERIES
Date.to_iso8601/2 was silently dropping the format parameter for custom calendars, and it's fixed.
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Elixir & Phoenix
URI ENCODING GETS 10X SPEEDUP AS PHOENIX PATCHES BOOT CRASH
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.
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Elixir & Phoenix
ELIXIR TIGHTENS GUARD SYNTAX, PHOENIX FIXES MIX DETECTION
José Valim shut down a common footgun in Elixir guards while the team fixed a startup bug that breaks when mix is available but not yet started.
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Elixir & Phoenix
PHOENIX LIVE VIEW PATCHES OPEN REDIRECT VULNERABILITY ACROSS TWO VERSIONS
Phoenix Live View shipped emergency security fixes for CVE-2026-64941 in both v1.1.33 and v1.2.9 to close an open redirect hole via ASCII control characters in the redirect/2 function.
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Elixir & Phoenix
ELIXIR FIXES UTF-8 CORRUPTION IN MACRO.TO_STRING, ECTO CUTS COMPILE DEPS
A critical fix landed for Elixir's string handling that was silently corrupting UTF-8 sequences when converting C1 control characters, while Ecto shipped a change that trims unnecessary compile-time dependencies from schema derivations.
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Elixir & Phoenix
MACRO.TO_STRING BUG BREAKS FOR COMPREHENSIONS WITH TRAILING KEYWORDS
Elixir's Macro.to_string/1 silently corrupts for-comprehensions that use do-end blocks with non-block trailing keywords, rendering valid code that no longer compiles.
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Elixir & Phoenix
ELIXIR PARSER GETS LEANER AS PHOENIX AUDITS DEAD CODE
Daniel Kukula shipped three consecutive optimizations to Elixir's date parsing pipeline, removing accumulators and intermediate allocations in a focused performance push [ref:1] [ref:2] [ref:3].
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Elixir & Phoenix
PHOENIX LIVE VIEW TIGHTENS UPLOAD REFERENCE FILTERING
Phoenix Live View streamlines how upload references are validated, cutting complexity out of a frequently-used handler.
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Elixir & Phoenix
ELIXIR BUMPS ZIZMOR SECURITY SCANNER TO 1.28.0
The Elixir repo updated its CI security action overnight, pulling in the latest zizmor static analysis tooling.
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Elixir & Phoenix
ELIXIR 1.20.3 TIGHTENS TYPE CHECKING, PHOENIX CUTS AGENT GUIDANCE BLOAT
Elixir shipped a compiler speedup and five type precision fixes that close the gaps developers keep finding in map and tuple handling.
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Elixir & Phoenix
PHOENIX TIGHTENS OUTPUT FORMATTING WHILE ELIXIR PATCHES DEPRECATION DOCS
Phoenix now enforces single trailing newlines in generated files to eliminate code churn, while the Elixir team corrects documentation errors in core modules.
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Elixir & Phoenix
SQLITE TEST FLAKES FIXED, DATETIME CASTING BREAKING CHANGE LANDS
Phoenix killed a long-standing SQLite test flakey that has haunted generated apps since day one, while Ecto ships a backward-incompatible DateTime normalization that tightens UTC handling.
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Elixir & Phoenix
ELIXIR CUTS DURATION PARSING AND TUPLE MATH OVERHEAD
Two core optimizations shipped overnight eliminate redundant passes and stack allocations across Calendar and tuple operations.
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Elixir & Phoenix
ELIXIR TRIMS REDUNDANT CHECKS, OPTIMIZES MACRO LOOKUPS
Preciz landed back-to-back efficiency wins in core Elixir, eliminating duplicate clause checks and cutting dictionary key lookups in half across the Macro module.
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Elixir & Phoenix
ELIXIR PATCHES CALENDAR PERFORMANCE REGRESSION WHILE PHOENIX EXPANDS PLUG FLEXIBILITY
Elixir shipped a critical fix for Calendar.strftime/3 that regressed after a recent change, while Phoenix clarifies pipe_through to handle all plug forms.
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