feat: periodic DNS re-resolution for client-side service discovery#513

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cgreeno wants to merge 12 commits intoelixir-grpc:masterfrom

cgreeno:feature/periodic-dns-re-resolution

Commits on Mar 27, 2026

feat: add periodic DNS re-resolution with backoff, rate limiting, and telemetry
cgreeno
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fix: timer leak, stale persistent_term, and bare hostname normalization
cgreeno
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fix: retry failed channels and add resolve timeout
cgreeno
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fix: handle {:error, _} channels in :refresh to prevent CaseClauseError
cgreeno
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refactor: async DNS resolution via Task.Supervisor
cgreeno
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fix: coerce http/https targets to dns:// for proper re-resolution
cgreeno
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fix: revert normalization changes, keep backwards compatibility
cgreeno
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refactor: extract DNS re-resolution into dedicated linked process

cgreeno
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claude
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fix: guard persistent_term writes and stabilize rate limiting test

cgreeno
and
claude
committed

Commits on Mar 30, 2026

fix: address PR review feedback from hansihe

cgreeno
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claude
committed

Commits on Mar 31, 2026

fix: address polvalente's review feedback
cgreeno
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Commits on Apr 13, 2026

refactor: expand Resolver behaviour with init/update/shutdown callbacks
cgreeno
committed