BAC-L2-SUB-106Substrate / Polkadot SDK
Anatomy of a FRAME pallet
The pallet as the unit of business logic: configuration, storage, calls, events, errors. The vocabulary for the rest of the track.
- Level
- L2 — Appchain developer
- Duration
- 4 h
- Maintainer
- Polkadot / Substrate Lead Architect
Learning objectives
- 01Create a minimal pallet and wire it into the runtime
- 02Distinguish compile-time configuration from governance-mutable parameters
- 03Read an existing pallet and locate its extension points
Guided lab
Write a counter pallet, wire it in, and call its functions from the interface.
Independent lab
Add a configuration parameter to the pallet and demonstrate its effect on behaviour.
Security angle
A misconfigured pallet compromises the whole runtime: configuration is an attack surface.
Assessment
Pallet wired in, callable, and covered by unit tests.