Celery

FIRST-HAND READS

What people reported, in their own words. Every line links to where it was said.

• “Reliable signals via Celery side-effects enqueued inside the DB transaction so rollbacks are respected”

  POSITIVE · reliability · Hacker News · 2026-04-13

• “Running something like celery quickly eats up all memory and start thrashing”

  NEGATIVE · performance · Hacker News · 2026-04-06

• “it traps you into celery which is just python or whatever language happens to create a celery compatible message structure”

  NEGATIVE · ease of use · Hacker News · 2026-04-03

• “monitoring Celery had helped us understand consumer bottlenecks”

  MIXED · performance · Hacker News · 2026-03-14

• “Having a separate container/deployment for celery, the web server, etc is nice so you can deploy and scale separately. Mostly it works fine”

  MIXED · features · Hacker News · 2026-03-09

• “the fragmentation between async code (API routes) and sync code (Celery workers / CLI scripts)”

  NEGATIVE · ease of use · Hacker News · 2026-02-12

• “a lot of "hate" towards Celery online these days. What issues have you run into with Celery? Has it gotten less reliable? harder to work with?”

  NEGATIVE · reliability · Hacker News · 2026-01-28

• “migrating back to LangGraph and Celery just to ensure reliability”

  POSITIVE · reliability · Hacker News · 2026-01-26

• “every Celery worker needs to load it into memory, so you end up needing much larger instances just to handle the overhead”

  NEGATIVE · performance · Hacker News · 2026-01-26

• “Celery has no graceful way to cancel in-flight tasks without risking termination of the entire worker process”

  NEGATIVE · features · Hacker News · 2025-12-19

• “Everyone I know who had Celery in production was looking for a substitution (custom or third-party) on a regular basis. Too many moving pieces and nuances (config × logic × backend), too many unresolved problems deep in its core (we've seen some ghosts you can't debug), too much of a codebase to understand or hack.”

  NEGATIVE · reliability · Hacker News · 2025-12-10

• “Celery would regularly hang. Queues would pile up. We had some crazy scripts that would restart celery, detect and kill hanging processes, etc.”

  NEGATIVE · reliability · Hacker News · 2025-11-29

• “I can manage celery tasks there and see where things are failing or backed up”

  MIXED · features · Hacker News · 2025-11-29

• “There is something in the concurrency stack inside Celery that is too fragile.”

  NEGATIVE · reliability · Hacker News · 2025-11-29

• “I'll continue using Celery in most cases but being able to transparently swap back-ends for testing, CI, etc. is very compelling”

  MIXED · features · Hacker News · 2025-11-29

• “a change to a celery task didn't trigger mypy to complain for all call sites until runtime”

  NEGATIVE · reliability · Hacker News · 2025-11-28

• “Manual intervention was required to restart stuck Celery jobs”

  NEGATIVE · reliability · Hacker News · 2025-11-12

• “Celery is decent for long running, background, or fire and forget tasks”

  MIXED · features · Hacker News · 2025-11-03

• “massively scaled Celery + RabbitMQ + Redis deployment with excellent off-the-shelf reporting”

  POSITIVE · performance · Hacker News · 2025-11-03

• “a combination or channels and celery for a few projects and it's works great”

  POSITIVE · performance · Hacker News · 2025-11-03

• “Celery doesn't support using Postgres as a broker. It seems like it should, but I guess no one has stepped up to write that.”

  NEGATIVE · features · Hacker News · 2025-10-29

• “Celery is fragile. It loses the connection with RabbitMQ sometimes and it needs a restart to recover.”

  NEGATIVE · reliability · Hacker News · 2025-10-22

• “Celery explicitly tells you not to pass non-trivial amounts of data around”

  NEGATIVE · performance · Hacker News · 2025-10-10