[6.x] Redis Broadcaster: Broadcast to multiple channels at once #31108
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Can you share some performance comparisons? |
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I do not think it has any performance impact on the Laravel application itself. However, it reduces the data transfer to the Redis server and CPU usage on the Redis server. The following screenshots are from my AWS Redis Cluster with this patch deployed on 11/01.
In my application each broadcast event is sent to 5 channels. So theoretically, this reduces the data transferred to 1/5. |
timoschwarzer
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Jan 28, 2020
This fixes a regression from laravel#31108
taylorotwell
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* Fix channel names when broadcasting via redis This fixes a regression from #31108 * Style fixes * Update Broadcaster.php * Override formatChannels instead of changing its signature Co-authored-by: Graham Campbell <[email protected]>
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This PR adds a Lua script to the
RedisBroadcasterwhich allows to broadcast to multiple channels at once.Why?
It is pretty common in Laravel to send events to multiple channels at once. Currently, this results in multiple
publishcommands, all sending the same payload to the Redis server. This causes unnecessary data transfer (costs), especially if the payload is rather big.