Technical Components

Firefly separates scheduling semantics, persistence, executor communication, operational APIs, and plugin lifecycle.

Component	Module	Responsibility
Scheduler Core	libs/scheduler-core	cron/fixed-rate, time zones, misfire, concurrency policy
Admin Model	apis/admin-model	Admin DTOs and view models
Admin HTTP	apis/admin-http	JSON API, authentication, RBAC, audit
JDBC Store	stores/jdbc	Jobs, nodes, leases, executions, outbox, audit
Netty Transport	transports/netty	Executor registration, heartbeat, trigger, ACK, result
Plugin API	plugins/plugin-api	Plugin lifecycle, configuration, status
Metrics	plugins/metrics-prometheus	Prometheus text metrics
Admin UI	ui/admin	Standalone Node console that proxies /api/*

Read Next

• Scheduler Core
• Scheduler Center
• Netty Executor
• JDBC and HA
• Plugin System