Question 1

How to set up Redis clustering with Predis in PHP?

Accepted Answer

Configure the 'cluster' client option to 'redis' for redis-cluster or 'predis' for client-side sharding, providing an array of node parameters. The README includes examples for both approaches with connection details.

Question 2

Predis vs phpredis: which is better for performance?

Accepted Answer

phpredis, as a C extension, generally offers superior raw performance and lower latency. Predis excels in flexibility, features, and ease of use via Composer, making it better for development and complex setups where performance isn't critical.

Question 3

How to enable TLS/SSL connections in Predis?

Accepted Answer

Use the 'tls' scheme in connection parameters with SSL options like 'cafile' for certificates. The README shows examples with named arrays and URI strings, including mTLS configuration for client certificate authentication.

Question 4

Does Predis support Redis Sentinel for high availability?

Accepted Answer

Yes, set the 'replication' option to 'sentinel' and provide sentinel nodes with a service name. It handles automatic failover and discovery, as detailed in the replication section with authentication examples.

Question 5

How to handle push notifications with RESP3 in Predis?

Accepted Answer

Establish a RESP3 connection with 'protocol' => 3 and use the push() method with a dispatcher loop. Attach callbacks for notification types like messages, enabling real-time data handling as shown in the push notifications section.

Question 6

What are the limitations of transactions in Predis with clustering?

Accepted Answer

Transactions on clustered connections require all keys to hash to the same slot, enforced using '{}' syntax. Redis doesn't support distributed transactions, so Predis has this restriction to ensure correctness.

Predis

What is Predis?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions