Using SDK with Synchronizer docker, getTreatment is always returning 'control'

Issue

After installing the Split Synchronizer docker instance and running it successfully with Redis instance, then configuring SDK to use Redis, the getTreatment call is always returning 'control'.

Root Cause

Synchronizer docker instance use a prefix for the Redis keys by default, if the SDK does not specify the same prefix in its redis configuration, it will not be able to read the Redis keys.

Solution

1. Verify if the Synchronizer is using a prefix, run the commands below:

redis-cli
Keys *

Verify if there is any text before "SPLITIO" in the key names, the example below suggest "myprefix" is used:

127.0.0.1:6379> keys *
 1) "myprefix.SPLITIO.split.Split1"
 2) "myprefix.SPLITIO.splits.till"
 3) "myprefix.SPLITIO.split.Split2"
 4) "myprefix.SPLITIO.split.nico_test"
 5) "myprefix.SPLITIO.split.coach_matching_v1"
 6) "myprefix.SPLITIO.split.clients_on"
 7) "myprefix.SPLITIO.split.Split3"
 8) "myprefix.SPLITIO.split.sample_feature"
 9) "myprefix.SPLITIO.segments.registered"
10) "myprefix.SPLITIO.split.Demo_split"
11) "myprefix.SPLITIO.split.clients"

In your SDK code, add the configuration parameter for the redis-prefix, as shown in the example below for PHP SDK:

from splitio import get_factory
config = {
  'redisHost' : 'localhost', 
  'redisPort' : 6379, 
  'redisDb' : 0, 
  'redisPassword' : 'somePassword',
  'redisPrefix' : 'myprefix'
}