Stream Node

Service Architecture · Cohort + code reviews

Hexagonal Ports for Legacy Java Services

Carve ports and adapters without freezing feature work for a quarter.

7 weeks · cohort

List price: BRL 2,800 (informational — no checkout here)

See Money-Back Policy for cooling-off rules.

Cover art for Hexagonal Ports for Legacy Java Services

Description

Incremental extraction plan for Spring-heavy services, with testing seams and adapter swap exercises. Includes a module on dealing with shared database rows.

What is included

  • Port discovery checklist
  • Adapter seam testing harness
  • Database strangler worksheet
  • Pairing rotation calendar template
  • Build pipeline tweaks for dual-running adapters
  • Risk log for transactional boundaries
  • Mentor code review voucher (one PR)

Outcomes

  • Identify three ports worth isolating first
  • Ship one adapter behind a feature flag
  • Document transactional risks with mitigations

Mentor on record

Systems mentor with a decade in enterprise Java modernization.

Avatar for Renata Silveira

Renata Silveira

FAQ

Cohort voices

"Hexagonal Ports for Legacy Java Services gave us a believable week-by-week extraction plan. Database strangler worksheet exposed a hidden foreign key we missed in reviews."

— Bruno C. , Engineer · Internal tools team · 5/5 · internal feedback

"Dense, in a good way — expect nightly reading."