Redis is a key-value store. The keys and their values are stored in separate databases, which are numbered db0, db1, …
You can use the redis-cli (command line interface) to interact with the Redis API to control records stored at our component Redis (AWS ElastiCache). We provide the redis-cli on your bastion host.
Preconditions
Activated redis-cli on the bastion host. Contact our service team at service@root360.de or create a ticket at https://support.root360.cloud to activate the redis-cli tool on your bastion host
You can connect to your Redis via the redis-cli with the following command to run on the bastion host: redis-cli -n 1 -h $redishost
As a common use case you may use the redis-cli tool to identify objects which does not provide a Time-To-Live (TTL). Such objects are not deleted according to their defined TTL and may increase memory utilization at a critical level.
1) INFO keyspace
For a quick overview of the number of keys and their average TTL:
redis-cli -h redis info keyspace
# Keyspace
db0:keys=2414,expires=2409,avg_ttl=734255
db1:keys=7177856,expires=0,avg_ttl=0
db2:keys=305579,expires=305579,avg_ttl=37469529
expires is the number of keys with an expiration/ttl configured for that database. avg_ttl is the average ttl for keys in that database.
2) List all keys with no TTL
List all keys with no TTL in redis instance redis in redis database $DBNUMBER in redis instance $REDISHOST:
redis-cli -n DBNUMBER -h REDISHOST --scan | while read LINE ; do TTL=`redis-cli -h REDISHOST ttl "$LINE"`; if [ $TTL -eq -1 ]; then echo "$LINE"; fi; done;
To run this command you need to replace placeholder DBNUMBER and REDISHOST with information of your environment
3) Redis trouble shooting
If you use redis-cli to troubleshoot redis. Redis will automatically select db0. Select the Redis logical database having the specified zero-based numeric index. Eg. to work at db1you need to run
