Standard Configuration file for Redis

In my earlier post i have covered how to run multiple instances of redis also showed through a video how it can done.

In this post, I am going to cover best suitable redis (recently i come across this beautiful blog simplifying the concept of redis and its uses in real world) configuration file structure to have to minimize confusion to identify which ports belong to which cache.

for example if you are having several ports configured for redis, how you will determine which port is associated with which redis cache.So in our case i.e redis with Magento, we normally used 3 types of cache

• Cache (magneto configuration files cache) 
• Full Page Cache
• Session Cache 

So, to avoid confusion among the ports and its associated cache, i would recommend to use following data in your redis configuration for each port respectively as shown.

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1) Create a file with name redis-base.conf under /etc/ and put the below content in it.

vi /etc/redis-base.conf   

daemonize yes
timeout 0
tcp-keepalive 0
loglevel warning
databases 2
stop-writes-on-bgsave-error yes
rdbcompression no
maxmemory-policy volatile-lru
appendonly no  (disabling Append Only File) used for persistence
appendfsync everysec   OR always ?
no-appendfsync-on-rewrite no
slowlog-log-slower-than 10000
slowlog-max-len 1024
list-max-ziplist-entries 512
list-max-ziplist-value 64
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
activerehashing yes
slave-serve-stale-data yes
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
tcp-backlog 511
tcp-keepalive 0
repl-disable-tcp-nodelay no

above parameters will be common for all redis instances we are going to use for Cache, Full Page Cache and Session cache.

2)  Configuration file for Full Page cache

vi /etc/redis-fpc.conf

include /etc/redis/redis-base.conf

port 6381

pidfile /var/run/redis/redis-fpc.pid

logfile /var/log/redis/fpc.log

dir /var/lib/redis/fpc

maxmemory 1gb

3)  Configuration file for Session file

vi /etc/redis-ses.conf

include /etc/redis/redis-base.conf

port 6380

pidfile /var/run/redis/redis-ses.pid

logfile /var/log/redis/ses.log

dir /var/lib/redis/ses

maxmemory 1gb

save 900 1

save 300 10

save 60 10000

4) Configuration file for Cache

vi /etc/redis-obj.conf

include /etc/redis/redis-base.conf

port 6379

pidfile /var/run/redis/redis-obj.pid

logfile /var/log/redis/obj.log

dir /var/lib/redis/obj

maxmemory 3gb

We are including the base file /etc/redis/redis-base.conf within every configuration files as the base file is having common variables which would be require for cache/full_page_cache and session cache.

Let me know if you have any queries on above post, you can reach to me anytime.

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