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term

Message Overhead Budget

The proportion of each transmission spent on protocol rather than payload, which on a metered or battery-powered link determines the running cost.

Constrained Protocols term

Edge Function

Code executed at a CDN point of presence close to the user, in a constrained, fast-starting runtime, typically to modify or route a request before it reaches an origin.

Edge Computing term

Interaction Modelling

Showing the ordered exchange of messages between participants over time, to reason about protocols, failure points and latency.

Sequence Diagrams term

Payload Compression Trade-off

The exchange of CPU time for reduced transfer time, which is favourable on constrained networks and harmful on fast local ones.

Network Performance Tuning term

Raft

A consensus algorithm designed to be understandable, decomposing agreement into leader election, log replication and safety.

Consensus Protocols

topic

Constrained Protocols

MQTT, CoAP and their kin, chosen for power, packet size and intermittent links.

2 items topic

Consensus Protocols

Raft, Paxos and quorums — what they guarantee and what they cost.

2 items