rename "dragonfly" to "redis"

apps/redis/start-redis-server.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+set -e
+
+sysctl vm.overcommit_memory=1 || true
+sysctl net.core.somaxconn=1024 || true
+
+PW_ARG=""
+if [[ ! -z "${REDIS_PASSWORD}" ]]; then
+  PW_ARG="--requirepass $REDIS_PASSWORD"
+fi
+
+# Set maxmemory-policy to 'allkeys-lru' for caching servers that should always evict old keys
+: ${MAXMEMORY_POLICY:="volatile-lru"}
+: ${APPENDONLY:="no"}
+: ${FLY_VM_MEMORY_MB:=512}
+if [ "${NOSAVE}" = "" ] ; then
+  : ${SAVE:="3600 1 300 100 60 10000"}
+fi
+# Set maxmemory to 10% of available memory
+MAXMEMORY=$(($FLY_VM_MEMORY_MB*80/100))
+
+mkdir /data/redis
+
+redis-server $PW_ARG \
+  --dir /data/redis \
+  --maxmemory "${MAXMEMORY}mb" \
+  --maxmemory-policy $MAXMEMORY_POLICY \
+  --appendonly $APPENDONLY \
+  --save "$SAVE"