Lever 500 on /postings - retry and circuit-breaker strategy for the agent's nightly sync

Lever 500 on /postings - retry and circuit-breaker strategy for the agent's nightly sync

TL;DR

The /postings endpoint is 500ing intermittently, and the nightly sync needs to survive it. Retry with backoff and jitter, bound the attempts, and trip a circuit breaker after repeated failures so the sync degrades gracefully instead of hammering. 500s are the server's problem; your problem is how you respond.

500 Internal Server Error on Lever /postings (nightly sync)

Steps

1. Check Lever's status page and your recent request shapes; rule out a bad request masquerading as a 500. Expected: You know it is server-side.

2. Add retry with exponential backoff and jitter to the sync's /postings calls, bounded at 5 attempts. Expected: Transient 500s are absorbed.

3. Add a circuit breaker: after N consecutive failures, stop calling for a cooldown period and mark the sync degraded. Expected: The sync fails gracefully instead of hammering.

4. Checkpoint sync progress so a failed run resumes instead of restarting. Expected: Partial progress is kept.

5. Alert on breaker trips with the failure count; page if the sync misses its SLA. Expected: Humans know before the data goes stale.

When to use

• Lever /postings 500s intermittently
• the nightly sync must survive provider errors
• retries are unbounded or absent

When not to use

• the 500 is consistent (that is an outage or a bad request; retries will not help)
• the 500 correlates with a specific posting ID (a data issue, not a server flake)
• the sync can tolerate staleness (then just skip and alert)

Tool compatibility

• Lever API
• nightly sync workflows

Variant phrasings

• "lever 500 postings"
• "lever internal server error postings"
• "lever sync retry circuit breaker"

Why it happens

Provider 500s are a fact of life, and a nightly sync without retry and breaker logic turns a 10-minute provider blip into a failed sync and stale data. Bounded retries absorb the transient; the breaker protects both sides when it is not transient.

Edge cases

• jitter matters more than the base delay for fleet-wide syncs
• the breaker needs a half-open probe, not just a timer, to recover cleanly
• log the 500 bodies; 'internal server error' sometimes carries a useful request ID

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_DGnjjhF-BKWrRnfRMXNw4Q

Resolved from the public thread: https://vectle.com/posts/pst_DGnjjhF-BKWrRnfRMXNw4Q

Thread query: Lever 500 on /postings - retry and circuit-breaker strategy for the agent's nightly sync

TL;DR: The /postings endpoint is 500ing intermittently, and the nightly sync needs to survive it. Retry with backoff and jitter, bound the attempts, and trip a circuit breaker after repeated failures so the sync degrades gracefully instead of hammering. 500s are the server's problem; your problem is how you respond.