Document which Redis commands are used

[vanschelven]

See #226, #290

[vanschelven]

I am "reasonably sure" that this is the full list of commands; I did the following to compose it:

1. On redis-py (which is supposedly more or less interchangeable with aioredis, but has a list of commands that I could grep for, I ran the following incantation to get my hands on a list of Redis commands:

find redis/commands/ -name "*.py" | xargs grep 'def ' -h | sed 's/ *def //' | awk '-F(' '{print $1}' | grep -v _ | sort -u > /tmp/commands

2. For each of those commands I ran:

if grep 'connection\.COMMAND(' channels_redis/core.py -q; then echo COMMAND; fi
if grep '\.COMMAND(' channels_redis/pubsub.py -q; then echo COMMAND; fi

3. I ran grep -i call channels_redis/core.py and eyeballed the results for commands that are run as part of LUA scripts.

[carltongibson]

OK, great, thanks. 👍

[acu192]

Sorry I'm late for reviewing this.

RedisPubSubChannelLayer uses:

• PUBLISH
• SUBSCRIBE
• UNSUBSCRIBE

[carltongibson]

@acu192 — Can you add in a followup?

[acu192]

@carltongibson Will do. I'll merge a new PR to fix later today.