Learn Java Microservices CPQ OMS Platform

Kaufman skill map, target architecture, learning loop, and production-grade platform boundaries for building a Java microservices CPQ and order management platform from scratch.

Deep CPQ and order management domain model, bounded contexts, aggregates, state transitions, snapshots, and business invariants for a Java microservices platform.

OpenAPI First API Governance for a Java microservices CPQ and order management platform, covering API design rules, lifecycle compatibility, error contracts, idempotency, pagination, security boundaries, and CI governance.

Schema First Domain Contracts for a Java microservices CPQ and order management platform, covering canonical schemas, JSON Schema, OpenAPI 3.1, event payloads, database boundaries, schema evolution, validation layers, and governance.

Build a production-grade JAX-RS and Jersey service foundation for CPQ/OMS microservices, including resource design, providers, filters, validation, error mapping, observability hooks, and boundary discipline.

Design a PostgreSQL data architecture for a Java microservices CPQ/OMS platform, covering schema ownership, transactions, constraints, indexes, JSONB, temporal data, auditability, concurrency, partitioning, and operational safety.

Build a production-grade MyBatis persistence layer for a Java microservices CPQ/OMS platform, covering mapper architecture, explicit SQL ownership, transaction boundaries, result maps, type handlers, concurrency, idempotency, outbox persistence, observability, and testing.

Build a disciplined database migration and reference data strategy for a Java microservices CPQ/OMS platform, covering versioned migrations, repeatable migrations, expand-contract delivery, reference data versioning, tenant bootstrap, safe backfills, rollback policy, CI/CD gates, drift detection, and operational recovery.

Build the Product Catalog Service for a Java microservices CPQ/OMS platform, covering commercial product modeling, offer hierarchy, attribute metadata, compatibility rules, lifecycle status, catalog publishing, temporal versioning, read models, OpenAPI contracts, PostgreSQL schema, MyBatis persistence, Kafka events, Redis caching, auditability, and production failure modes.

Build the Configuration Engine for a Java microservices CPQ/OMS platform, covering configurable product modeling, constraint evaluation, selection graph, attribute validation, compatibility rules, explainable validation errors, deterministic configuration snapshots, OpenAPI contracts, PostgreSQL and MyBatis persistence, Redis acceleration, Kafka integration, and production failure modes.

Build a deterministic Pricing Engine for a Java microservices CPQ/OMS platform, covering price books, charge models, monetary precision, discount stacking, rating pipeline, pricing snapshots, OpenAPI contracts, PostgreSQL and MyBatis persistence, Redis caching, Kafka events, testing strategy, and production failure modes.

Build the Quote Service lifecycle for a Java microservices CPQ/OMS platform, covering quote aggregate design, state machine, versioning, pricing and configuration snapshots, approval hooks, idempotent commands, optimistic concurrency, quote documents, expiration, acceptance, OpenAPI contracts, PostgreSQL and MyBatis persistence, Kafka events, Redis usage, tests, and production failure modes.

Build the approval policy and escalation model for a Java microservices CPQ/OMS platform, covering approval signals, decision records, approval matrices, state machines, delegation, SLA timers, escalation, override, auditability, JAX-RS APIs, PostgreSQL/MyBatis persistence, Kafka events, Redis acceleration, Camunda 7 integration seams, testing, and production failure modes.

Build the order capture and order normalization layer for a Java microservices CPQ/OMS platform, covering quote-to-order conversion, idempotent submission, commercial snapshot preservation, orderability validation, normalized order aggregate, line item transformation, PostgreSQL/MyBatis persistence, JAX-RS APIs, Kafka events, audit evidence, failure handling, and production test strategy.

Build the order state machine and lifecycle for a Java microservices CPQ/OMS platform, covering order aggregate semantics, line-level states, dependency sequencing, cancellation, suspension, resumption, terminal states, PostgreSQL constraints, MyBatis transitions, Kafka events, reconciliation, and invariant testing.

Build a production-grade Camunda 7 process engine architecture for a Java microservices CPQ/OMS platform, covering engine placement, runtime and history tables, process application boundaries, embedded vs shared engine, job executor, transactions, async continuations, incidents, deployment awareness, migration seams, and safe integration with order lifecycle services.