Email retry has no exponential backoff or jitter — same job hammered repeatedly

[hman38705]

Labels: reliability, email

Priority: Medium

Description

src/email/queue.rs retries failed email jobs without any delay between attempts. Under a sustained SendGrid outage, the worker will hammer the API as fast as possible, wasting resources and worsening the outage impact.

Acceptance Criteria

• Implement exponential backoff: delay = min(initial_delay * 2^attempt, max_delay) + random jitter
• Store next_attempt_at in the Redis job value and only dequeue jobs whose next_attempt_at <= now()
• Add configuration variables: EMAIL_RETRY_INITIAL_DELAY_SECS (default 30), EMAIL_RETRY_MAX_DELAY_SECS (default 3600)
• Add a test verifying retry delays increase exponentially across three attempts

[obedojukwu50-stack]

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[midexol]

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Hi maintainer I'd like to work on this please assign

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[edwarddavid929-png]

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i would like to work on this project

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