Modernize Legacy Code Without a Big-Bang Rewrite
Maintenance, Reverse Engineering & Modernization: leave with a dependency map, characterization tests and a strangler-style replacement plan.
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What this session would cover
Proposed outline — the mentor finalises the agenda once this topic is scheduled.
- 1Why maintenance, reverse engineering & modernization matters — the common problem: Nobody dares change the old system because nobody knows what it really does.
- 2Core concepts in plain language: Codebase analysis, dependency mapping, characterization tests, legacy integration, framework upgrades, database migrations
- 3Going further: compatibility management, incremental replacement, deprecation, technical-debt reduction, software retirement
- 4Framework walkthrough: Test Pyramid, SOLID Principles, Acceptance Criteria (Given–When–Then)
- 5Practical workflow, built live: A dependency map, characterization tests and a strangler-style replacement plan.
- 6How to measure it: Defect escape rate, Test reliability (flaky-test rate), Change failure rate, Lead time for changes
- 7An illustrative case (a fictional example, not a client result), then live Q&A on your own situation
Who it's for
- • Students and freshers entering tech
- • Working developers and engineers
- • Tech leads and architects
You'd leave with
- A dependency map, characterization tests and a strangler-style replacement plan.
- A working understanding of Test Pyramid and SOLID Principles
- A short list of measures to track: Defect escape rate, Test reliability (flaky-test rate), Change failure rate
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