Description
Redis pub sub executes the informing framework where senders sends the messages while beneficiaries achieved them. The connection by which messages are exchanged is called channel.
There is one really important thing to understand about Redis transactions and are actually queuing up the commands for the transactions, when the user run the transaction it will actually fail and it won't run any of the commands. The only time that res will actually run commands after an error has occurred is if that error occurs when the transaction is actually executing as opposed to when the commands are being queued up to be executed.
Description
The following table describes the basic commands in publish and subscribe summons in Redis database.
| S.NO | Command | Describtion |
|---|---|---|
| 1 | PSUBSCRIBE pattern | Subscribe to channels matching the given patterns. |
| 2 | PUBSUB subcommand | Tells the state of pubsub system |
| 3 | PUBLISH channel message | Post a message to a channel |
| 4 | PUNSUBSCRIBE | Stop listing for message posted to channels matching the given patterns |
| 5 | SUBSCRIBE channel | Listen for message published to the given channels |
| 6 | UNSUSCRIBE | Stop listining for message posted to the given channels |
Key Points
- Publish and Subscribe - Will execute the frame work for all the clients.
- Publish and subscribe commands - Describe the basic functionalities in Redis database.