itamarhaber

-- Two dashes start a one-line comment.

--[[
     Adding two ['s and ]'s makes it a
     multi-line comment.
--]]

----------------------------------------------------
-- 1. Variables and flow control.
----------------------------------------------------

itamarhaber

Create the file with the actual bytes, not the '\xnn\ representation. For example, in Python:

f = open('filename', 'w')
f.write('\x01\x02\x03')
f.close()

Load the file with redis-cli -x set keyname < filename

itamarhaber

import requests
import json

jt = json.dumps({'trashed': True})

url = 'https://api.mention.net/api/accounts/<account identifier>/alerts/<alert identifier>/mentions'
gh = {'Accept': 'application/json', 'Accept-Language': 'en', 'Authorization': 'Bearer <token>'}
ph = gh.copy()
ph['Content-Type'] = 'application/json'

itamarhaber

foo@bar:~/src/quadtree$ redis-cli zcard x
(integer) 100000
foo@bar:~/src/quadtree$ redis-cli zcard y
(integer) 100000
foo@bar:~/src/quadtree$ redis-cli hlen qt
(integer) 56325
foo@bar:~/src/quadtree$ redis-cli script load "`cat rqtih.lua`"
"84f91fddf261e9a2ef14ff4b417443eed3dc4b2b"
foo@bar:~/src/quadtree$ redis-benchmark -n 100 -r 1000000 evalsha 84f91fddf261e9a2ef14ff4b417443eed3dc4b2b 3 x y tmp  zquery __rand_int__ __rand_int__ __rand_int__ __rand_int__
====== evalsha 84f91fddf261e9a2ef14ff4b417443eed3dc4b2b 3 x y tmp zquery __rand_int__ __rand_int__ __rand_int__ __rand_int__ ======

itamarhaber

foo@bar:~/memtier_benchmark$ ./memtier_benchmark -p 11211 -P memcache_text -x 1
[RUN #1] Preparing benchmark client...
[RUN #1] Launching threads now...
[RUN #1 100%,  46 secs]  0 threads:     2000000 ops,   44427 (avg:   43467) ops/sec, 1.27MB/sec (avg: 1.24MB/sec),  4.50 (avg:  4.58) msec latency

4         Threads
50        Connections per thread
10000     Requests per thread
Type        Ops/sec     Hits/sec   Misses/sec      Latency       KB/sec
------------------------------------------------------------------------

itamarhaber

Slidedeck: https://www.slideshare.net/itamarhaber/use-redis-in-odd-and-unusual-ways

1. Redis Watch - a periodic newsletter about everything Redis: http://bit.ly/RedisWatch
2. Redis homepage: https://redis.io/
3. Redis source: https://github.com/antirez/redis
4. Antirez (a.k.a Salvatore Sanfilippo) - Redis' creator - blog: http://antirez.com/
5. Redis Labs - the home of Redis: https://redislabs.com
6. The Redis Manifesto: https://github.com/antirez/redis/blob/unstable/MANIFESTO
7. Latency Numbers Every Programmer Should Know: https://gist.github.com/jboner/2841832
8. Programming Languages Benchmark: https://attractivechaos.github.io/plb/

itamarhaber

Slide deck

Ask a Redis Expert Webinar - Why Your MongoDB Needs Redis: http://www.slideshare.net/itamarhaber/why-your-mongodb-needs-redis

URLs

1. Redis Watch Newsletter: http://bit.ly/RedisWatch
2. MongoDB and Redis: a different interpretation of what's wrong with Relational DBs: http://antirez.com/post/MongoDB-and-Redis.html
3. Redis project website: http://redis.io
4. https://github.com/antirez/redis

itamarhaber

"Went up the mountain, spent some time there, a bush or something was burning and I must have inhaled the smoke because I came back down carrying these two slabs of stone...", HippieLogLog

Ten Redis Commandments

I. I am thy open source, BSD licensed, data structure store

II. Thou shalt have no other data but that which fits in RAM

itamarhaber

-- Returns a key's absolute TTL

local t = tonumber(redis.call('TTL', KEYS[1]))
if t > 0 then
  t = t + tonumber(redis.call('TIME')[1])
end

return t

itamarhaber

foo@bar:~$ redis-cli 
127.0.0.1:6379> flushall
OK
127.0.0.1:6379> save
OK
127.0.0.1:6379> set p persistent
OK
127.0.0.1:6379> set v volatile
OK
127.0.0.1:6379> expire v 99999999