Gracefully exit when redis is not running

[wires]

thing currently keeps running when cannot connect with redis

Error: Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED
    at RedisClient.flush_and_error (/Users/wires/r/erfgoed-locatie/histograph-core/node_modules/redis/index.js:149:13)
    at RedisClient.on_error (/Users/wires/r/erfgoed-locatie/histograph-core/node_modules/redis/index.js:191:10)
    at Socket.<anonymous> (/Users/wires/r/erfgoed-locatie/histograph-core/node_modules/redis/index.js:106:14)
    at Socket.emit (events.js:107:17)
    at net.js:459:14
    at process._tickCallback (node.js:355:11)

[bertspaan]

@wires what about some sort of histograph-db module which uses histograph-config and connects to Elasticsearch, Redis or Neo4j (or all of them), and exits on failure?

[sbocconi]

This issue from Trello is also related to this:

API onbereikbaar als redis down is

100% cpu tijd op API, omdat deze constant met redis probeert te connecten
API is dan non responsive