PHP legacy application upgrades topics
12 short topics in Architecture and System Design. Each one is a single focused exercise with a clear piece of evidence at the end.
12 topics, one exercise each.
Work through them in order, or jump to the one you need.
These are draft topic outlines (draft; instructor review pending). Full lessons follow after review; ask Ajay if you need a topic sooner.
- 01
Existing-system inventory
Produce a PHP legacy application upgrades design applying existing-system inventory; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 02
Compatibility and dependency analysis
Produce a PHP legacy application upgrades design applying compatibility and dependency analysis; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 03
Behavior characterization tests
Produce a PHP legacy application upgrades design applying behavior characterization tests; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 04
Target architecture boundaries
Produce a PHP legacy application upgrades design applying target architecture boundaries; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 05
Incremental migration sequence
Produce a PHP legacy application upgrades design applying incremental migration sequence; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 06
Data and schema transition
Produce a PHP legacy application upgrades design applying data and schema transition; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 07
Interface adapter strategy
Produce a PHP legacy application upgrades design applying interface adapter strategy; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 08
Authentication and configuration continuity
Produce a PHP legacy application upgrades design applying authentication and configuration continuity; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 09
Release and rollback design
Produce a PHP legacy application upgrades design applying release and rollback design; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 10
Performance baseline preservation
Produce a PHP legacy application upgrades design applying performance baseline preservation; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 11
Operational evidence and monitoring
Produce a PHP legacy application upgrades design applying operational evidence and monitoring; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
Open micro-course → - 12
Migration acceptance and handoff
Produce a PHP legacy application upgrades design applying migration acceptance and handoff; justify a tradeoff and define review criteria. Keep the exercise bounded and record the behavior supported by the chosen version.
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Learn the same ideas beyond PHP legacy application upgrades.
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