Step-by-step paths with difficulty, time estimates and a resource for every node. Pick a track, track your progress.
From HTTP basics to distributed systems.
Core Java to concurrency & the JVM.
REST, JPA, security, testing, deploy.
HLD, LLD, trade-offs, real systems.
Boundaries, comms, resilience, observability.
Pods to production — deploy, scale, secure.
Tap a step to open the concept. Tap its circle to mark it done — your progress is saved on this device.
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