Redis is an open-source, in-memory data structure store that can be used as a database, cache, and message broker. It supports various data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, and geospatial indexes with radius queries. Redis has built-in replication, Lua scripting, LRU eviction, transactions, and different levels of on-disk persistence, and provides high availability and automatic partitioning with Redis Cluster.
- Data Structures: Redis supports various data structures such as strings, lists, sets, sorted sets, hashes, bitmaps, hyperloglogs, and geospatial indexes.
- In-Memory Store: It operates as an in-memory data store, making it very fast for read and write operations.
- Persistence: Redis supports different levels of on-disk persistence, allowing data to be saved on disk for durability.
- Replication: Built-in support for replication, enabling high availability and scalability.
- Lua Scripting: It allows users to extend Redis's functionality using Lua scripts.
- Transactions: Redis supports transactions, ensuring atomicity and consistency of operations.
- Pub/Sub Messaging: Provides a robust Publish/Subscribe messaging mechanism.
- High Availability: Redis can be configured for high availability using features such as Redis Sentinel and Redis Cluster.
cd services/redis/./redis-up.sh
cd services/redis/./redis-cluster-up.sh
# redis
$ kubectl get secret redis -o jsonpath='{.data.redis-password}' | base64 --decode
$ kubectl port-forward svc/redis-master 6379:tcp-redis:6379
# redis cluster
$ kubectl get secret redis-cluster -o jsonpath='{.data.redis-password}' | base64 --decode
$ kubectl port-forward svc/redis-cluster 6379:tcp-redis:6379# Example of setting a key-value pair
$ redis-cli -h localhost --pass <pass_from_secret>
127.0.0.1:6379> SET mykey "Hello"
OK
127.0.0.1:6379> GET mykey
"Hello"You can access the redis dashboard in Grafana
$ kubectl port-forward deployment/kube-prometheus-stack-grafana 3000:3000 --namespace monitoring