2026-04-20 Messaging Weekly

Highlights §

• Status:
  • Foundation for Communities Optimization milestone completed

Logos Delivery §

Reliable Channel API — Developer Preview §

• [Deliverable] Implement Reliable Channel API

  • next:
    • Complete Reliable Channel API spec
    • Implement SDS Reliable

• [Deliverable] Implement SDS-Repair

  • next:
    • Implemented SDS-R in nim-sds
    • SDS integration inside logos-delivery

QUIC Transport in Logos Delivery §

• [Deliverable] Trial QUIC
  • achieved:
    • Local and simple validation that QUIC works well
  • next:
    • QUIC validation PoC working in Logos Delivery Simulator with QUIC
    • Implement QUIC in logos-delivery

Fleet Stability §

• [Deliverable] Resolve known fleet stability issues
  • achieved:
    • add log with content_topic value on each protocol interaction

Nimble Migration §

• [Deliverable] Migrate logos-delivery to Nimble
  • achieved:
    • use nimble 0.22.3 and more appropriate nimble.lock

Logos Chat §

Chat — Foundations §

• [Deliverable] Chat SDK Developer Preview
  • achieved:
    • Remove stale doubleratchet FFI interfaces: https://github.com/logos-messaging/libchat/pull/84
    • Add Nix Flake: https://github.com/logos-messaging/libchat/pull/85
    • Add CLI test App: https://github.com/logos-messaging/libchat/pull/87

Status §

Status: Foundation for Communities Optimization §

• achieved:
  • [Deliverable] Define and implement sharding for Communities messages completed. manual sharding was agreed to be reverted.

Maintenance §

• achieved:
  • Avoid manual start/stop protocols if they’re mounted before switch is started
  • bug: num-shards-in-network and shard params are not working properly when preset override happens
  • bug: Peers stats count look inconsistent (/admin/v1/peers/stats)
  • use EWMA to show main loop lag information