Public sample. This is an analysis of the open-source repository symfony/symfony. Generated April 2026.
symfony/symfony
Symfony — Technical debt report
The leading PHP framework for enterprise web applications. A monorepo housing dozens of components with mature, long-term support cycles.
Health score
79/100
Firefighting
€14,800
per month
Debt servicing
€9,200
per month
Recovery
€72,000
one-time
AI narrative
Symfony's monorepo shows the discipline of its LTS model: merge discipline is exceptional (92/100) and knowledge is well distributed across maintainers. The cost pressure comes from the HttpKernel and DependencyInjection components, which concentrate change volume and temporal coupling — unsurprising for a framework's core plumbing. Velocity trend at 74/100 reflects a healthy balance between feature work and maintenance releases. Recovery investment would primarily target interface extraction around the top two hotspots.
Eight-dimensional health profile
Top hotspots
| File | Changes (6mo) | Estimated cost |
|---|---|---|
| src/Symfony/Component/HttpKernel/HttpKernel.php | 287 | €1,700/mo |
| src/Symfony/Component/DependencyInjection/ContainerBuilder.php | 263 | €1,560/mo |
| src/Symfony/Component/Form/FormBuilder.php | 201 | €1,180/mo |
| src/Symfony/Component/Routing/RouteCollection.php | 178 | €1,040/mo |
| src/Symfony/Bundle/FrameworkBundle/Kernel.php | 155 | €920/mo |
This report is a public illustration. Cost estimates assume a team of 10 developers at €450/day.