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.NET Memory Management

GC and Lifetime

Managed heap behavior, object reachability, cleanup ownership, disposal, and dependency lifetime boundaries.

8 drillsPractice one at a timeOrdered pathConcept questionComparison questionDebugging scenarioCode review

Recommended start

.NET GC Generations

Introduces managed heap cleanup, generational collection, object lifetime, and why allocation behavior affects .NET services.

Easy~5 minStep 1 of 8

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1.NET GC GenerationsRecommended startIntroduces managed heap cleanup, generational collection, object lifetime, and why allocation behavior affects .NET services.Concept questionEasy~5 min.NETC#Practice 2

Practice order

8 drillsOne at a time

1.NET GC GenerationsUp next / Easy / ~5 min
2Leak vs PressureEasy / ~5 min
3Object ReachabilityMedium / ~7 min
4

Leak vs Pressure

Clarifies the difference between objects being retained accidentally and code simply allocating too much temporary memory.

Comparison questionEasy~5 min.NETC#

Practice

3Object ReachabilityExplains how GC roots retain reachable object graphs and turns heap evidence into a concrete ownership fix for static state, events, closures, queues, and caches.Concept questionMedium~7 min.NETC#Practice

4Large AllocationsCovers the Large Object Heap, big buffers, fragmentation pressure, and practical ways to avoid loading too much at once.Concept questionMedium~7 min.NETC#Practice

5Dispose vs FinalizerDistinguishes deterministic cleanup from finalization and explains resource ownership in normal application code.Comparison questionMedium~7 min.NETC#Practice

6Async DisposalExplains asynchronous cleanup for resources whose shutdown path needs async work, such as flushing or closing remote connections.Concept questionMedium~7 min.NETC#Practice

7Event LeakShows how publisher-to-subscriber references can retain objects and how to clean up event-based lifetimes.Debugging scenarioMedium~10 min.NETC#Practice

8Singleton CaptureReviews a captive scoped dependency as both a lifetime and concurrency bug, then replaces it with explicit per-operation scopes and minimal immutable work data.Code reviewHard~12 min.NETC#Practice

Large Allocations

Medium / ~7 min

5Dispose vs FinalizerMedium / ~7 min

6Async DisposalMedium / ~7 min

7Event LeakMedium / ~10 min

8Singleton CaptureHard / ~12 min

GC and Lifetime - .NET Memory Management | Aporeon