HN Explorer

10 comments

[ 5.5 ms ] story [ 31.3 ms ] thread
waitingkuo
What's the benefit to use Redis pipe instead of Unix pipes?
bytesandbots
I guess it might be very useful in a cloud like environment where you use this set up to pipe data across scaled up servers.
morgenkaffee
I use it as a poor man's job queue.

cat jobs.txt | redis-pipe jobs

An then on several workers: redis-pipe --count 10 jobs | python do-work.py | redis-pipe results

An then in the end: redis-pipe results > results.txt

Or you can use it as simple logging mechanism: tail -f /var/log/syslog | ./redis-pipe logs

eddd
Poor man's job queue is celery with redis backend i guess.
nissimk
Why are you using LPUSH/LPOP instead of PUBLISH/PSUBSCRIBE?

I guess you get storage that way, but only one consumer of each message. It would be nice if it was optional in case you had a different application where you need to have multiple subscribers to the same topic.

morgenkaffee
Yes you're right. I can create a flag --publish and --subscribe.
fprotthetarball
See this for more inspiration (using pub/sub):

https://github.com/whee/rp

morgenkaffee
Ah that's the same idea! Wished I found that before. Thanks man.
fprotthetarball
The interesting thing about rp is that you can use it as a pipeline in your other Go applications, as the Redis pub/sub "pipe" is exposed as a normal Go io.Reader/io.Writer interface. Might be something worth expanding on somehow.