Todo:

• Change all db to connection.GetDb()

• Topics

  • Strings
  • Object as json strings
  • HashMap
  • List
  • listening to list
  • Set
  • pub/sub
  • Understand RedisValue
  • lua script
  • transactional updates
  • Connections and configurations
    • Explain multiplexer vs getDatabase(), cheap pass thorugh and reusable

• Cookbook

  • Consensus building
  • Work distribution

• Best practices

  • Wrap IDatabase (for testing/mocking)
  • Create only one multiplexer

• Advanced

  • SSL with redis
  • mastter slave
  • kyspace notifications

• Create a client

• Use SETENX

• Save a POCO by its id in redis

• Retrieve a POCO by its id in redis

• Implement connection recovery

Redis with C#

Contents

• Setup Redis using Docker

  Use Docker to run Redis and Redis CLI on your machine

• StackExchange.Redis

  Choose a client library and create a .NET console app

• Strings

  Save strings. learn TTL for key expiry, and using NX for writting only when value is null

• Storing Objects As Json Strings

  Create extensions to build custom logic like serializing/deserializing objects to store them as JSON in Redis.

• HashMaps

  Use Entries to save and get Maps. APIs to update/read individual fields in Map.

• Lists

  Blocking pop is not supported in Stackexchange.Redis.

• Sets

• Storing Objects for concurrent updates

Misc

• redis treats a non-existent key as zero;
• nil responses are treated as zero
• Keys can be string or byte (redis never tries to interpret them as any type)
• Use KeyValue.HasValue to check if there is any value for the key

Pre-requisite

• Read basics about redis:

  https://redis.io/topics/introduction

• Ensure .NET6 is installed

  Download : https://dotnet.microsoft.com/download/dotnet/6.0

• Ensure docker is installed ( v3.3.1 or above)

  Download and install from https://www.docker.com/products/docker-desktop.

• CLI

  Commands in this arcticle are created for bash. You can use most command in a poweshell. Its recommended to use something like wsl or git bash if you are running on windows.

  Download and install gitbash (if required) from : https://git-scm.com/downloads

References:

• Redis c# clients: https://docs.redis.com/latest/rs/references/client_references/client_csharp/

• StackExchangeRedis: https://github.com/StackExchange/StackExchange.Redis

• StackExchangeRedis Docs: https://stackexchange.github.io/StackExchange.Redis/

• StackExchangeRedis Best Practices : https://gist.github.com/JonCole/925630df72be1351b21440625ff2671f#stackexchangeredis