NATS Jetstream updates

[joeblew999]

Summary

Request to add NATS JetStream as a message queue backend alongside the existing Kafka
support in go-queue, enabling go-zero applications to leverage NATS for messaging
infrastructure.

Problem Statement

Currently, go-zero only supports Kafka through go-queue for message queuing. However,
many organizations prefer NATS for its:

• Lightweight footprint - single binary deployment
• Embedded capability - can run in-process with applications
• Clustering support - automatic failover and data replication
• Network partition resilience - local operation with automatic sync when connectivity
  returns
• Pure Go implementation - no external dependencies

Proposed Solution

Add NATS JetStream support to go-queue with similar API patterns to the existing Kafka
(kq) implementation:

  // Proposed API structure
  type NatsConfig struct {
      Servers      []string
      StreamName   string
      Subject      string
      ConsumerName string
      // ... other NATS-specific options
  }

  // Producer
  func NewNatsProducer(config NatsConfig) *NatsProducer

  // Consumer  
  func NewNatsConsumer(config NatsConfig) *NatsConsumer

Benefits

1. Deployment flexibility - embed NATS in single-node deployments or use clustered
   setup
2. Operational resilience - applications continue working during network partitions
3. Resource efficiency - lower memory and CPU footprint than Kafka
4. Developer experience - native Go implementation, easier debugging and deployment

Implementation Approach

• Follow existing go-queue patterns (kq structure)
• Leverage https://github.com/nats-io/nats.go client library
• Support both core NATS and JetStream features
• Maintain API consistency with existing kq implementation

Use Cases

• Edge computing - applications that need messaging without external infrastructure
• Development environments - simplified local development with embedded messaging
• Hybrid deployments - gradual migration from single-node to clustered setups
• Network-constrained environments - applications that must operate during
  connectivity issues

Offer to Contribute

I'm willing to contribute to this implementation and can provide:

• Initial proof-of-concept
• Test cases and documentation
• Real-world testing feedback

This would significantly expand go-zero's messaging capabilities and provide
developers with more deployment options.

[joeblew999]

seems to be a PR under way: zeromicro/go-queue#85

Need to help on this ?

[joeblew999]

if wanted, I can also remove https://github.com/nats-io/stan.go as its reach EOL ( end of life ) many years ago.

[kevwan]

Please check go-queue for nats.

[joeblew999]

Thanks @kevwan

Yep I see it now .

Thank you ..

[joeblew999]

I will close this here, because it belongs in the other repo...