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November 5, 2025

Agenda​

  • next host
  • Road to v2.0 discussion
  • WASIP3 update

Meeting Notes​

Demo: Next host​

  • Lucas demonstrated the setup and functionality of wasmCloud v2, highlighting the runtime operator and the new wasmCloud host.
  • By default, wasmCloud v2 utilizes Kubernetes for orchestration.
  • NATS serves as the message bus for communication between the runtime operator and the wasmCloud host.
  • Workloads can be deployed to specific host groups, allowing for multi-tenant deployments and isolation.
  • A new wash host command allows the Wasm Shell binary to act as a cluster host.
  • Responsibility for scheduling has been moved to the operator, allowing for development and use of custom schedulers.
  • The runtime allows for custom host plugins to extend functionality.
  • wasmCloud v2.0.0-rc1 will be released in the next days, and we'd love feedback!

Discussions and Q&A:

  • Autoscaling for Hosts: Discussed how autoscaling can be achieved at the Kubernetes layer using Horizontal Pod Autoscalers (HPAs) for hosts, but not yet for components themselves.
  • Workload and Service Concepts: Services allow for long-running code and act as a supervisor for components within that workload. This enables features like connection pooling and managing long-lived resources.
  • Host Plugins as Providers: Discussion on whether host plugins should support both in-process and out-of-process communications, with the current implementation focusing on local calls within the host.
  • Multicluster Considerations: The approach for multicluster environments aligns with Kubernetes' capabilities, emphasizing management within Kubernetes boundaries. Community Updates and Events:

Async support in JCO for Preview 3 of the component model.

Discussion: WASI P3 update​

  • Victor provided an update on how async support is proceeding in jco's WASI P3 implementation, which will provide a second reference implementation for WASI P3.

Weekly highlights​

Documentation of the Week​

Community Updates​

  • WasmCon NA in Atlanta: Flynn and Bailey will be giving a talk demonstrating wasmCloud with Linkerd.
  • A new blog post detailing the architecture of wasmCloud v2 has been published.
  • Upcoming CFPs: Calls for papers are open for Wasm.io.
  • KubeCon: Check out the blog for details about wasmCloud's presence at KubeCon, including booth location and various talks.

Recording​