fix(functions): set nofile ulimit for Edge Runtime container#5152
Merged
avallete merged 4 commits intosupabase:developfrom Apr 30, 2026
Merged
fix(functions): set nofile ulimit for Edge Runtime container#5152avallete merged 4 commits intosupabase:developfrom
avallete merged 4 commits intosupabase:developfrom
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The Edge Runtime container was started with Docker's default nofile ulimit (1024 soft), causing "Too many open files" errors for projects with 200+ Edge Functions running long dev sessions. Set nofile ulimit to 65536 (soft and hard) to allow sufficient file descriptors for Deno isolates handling many concurrent functions. Fixes supabase#5151 Signed-off-by: wucm667 <stevenwucongmin@gmail.com>
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Apr 30, 2026
Coverage Report for CI Build 25156940952Warning Build has drifted: This PR's base is out of sync with its target branch, so coverage data may include unrelated changes. Coverage increased (+0.004%) to 63.757%Details
Uncovered ChangesNo uncovered changes found. Coverage Regressions5 previously-covered lines in 1 file lost coverage.
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Fixes #5151
What type of PR is this?
What this PR does / why it is needed:
The Edge Runtime container was started with Docker's default
nofileulimit (1024 soft limit). For projects with many Edge Functions (200+) and long-running local dev sessions, the per-isolate file descriptor usage accumulates until new isolates fail to boot with:This PR sets the
nofileulimit to 65536 (both soft and hard) for the Edge Runtime container, allowing sufficient file descriptors for Deno isolates handling many concurrent functions.Changes:
Resources.Ulimitsto thecontainer.HostConfiginServeFunctions, settingnofileto 65536Reproduction:
supabase start