#!/bin/bash

## Requires AWS CLI Tools

aws elasticache create-snapshot --cache-cluster-id redis-replica-1 --snapshot-name cg-backup-hourly-"$(date +"%Y-%m-%d-%H%M")"

if [ $(aws elasticache describe-snapshots --cache-cluster-id redis-replica-1 |grep SnapshotName | wc -l)  = "8" ]; then
 old_snapshot="$(aws elasticache describe-snapshots --cache-cluster-id redis-replica-1 |grep SnapshotName | head -1 | cut -d \" -f 4)"
 aws elasticache delete-snapshot --snapshot-name $old_snapshot
fi