Python Redis List for Pivotal Cloud Foundry

pcf-redis-list.py

import json, os
import redis
from redis_collections import List

MAX = 50

# Authenticate and create redis object (assuming PCF service)
creds = json.loads(os.environ['VCAP_SERVICES'])['p-redis'][0]['credentials']
r = redis.StrictRedis(host=creds['host'], port=creds['port'], password=creds['password'], db=0)

# Instantiate a List object with key name 'mydata'
l = List(redis=r, key='mydata')

# Ensure only 20 latest of MAX items exist
for x in range(0, MAX):
  l.append( str(x) )
  if len(l) > 20:
    l.pop(0)

# Read 20 item stack-list into array
results = [item for item in l]