BAC-L3-XCHAIN-103Interoperable systems engineering
Relayers: infrastructure without privilege
Those who carry messages without being able to forge them, but whose stopping is enough to strand funds.
- Level
- L3 — Infrastructure engineer
- Duration
- 3 h
- Maintainer
- Chief Blockchain Architect
Learning objectives
- 01Explain why a relayer cannot forge a message
- 02Operate and monitor a relayer
- 03Design a sustainable relaying economic model
Guided lab
Operate a relayer between two cohort chains and track its real costs.
Independent lab
Cost out annual relaying and propose a funding model.
Security angle
A single relayer is a censorship point: operator redundancy is a design requirement.
Assessment
Operated relayer with a cost record and working monitoring.