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Aporeon

Technical interview practice, from one developer to another.

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.NET Memory Management

Allocation Performance

Practical allocation control for APIs, collections, strings, buffers, EF Core reads, streaming, and batch jobs.

7 drillsPractice one at a timeOrdered pathArchitecture scenarioComparison questionConcept question

Recommended start

Hot Path Allocations

Frames allocation reduction as measurement-driven API work rather than premature micro-optimization.

Medium~10 minStep 1 of 7

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1Hot Path AllocationsRecommended startFrames allocation reduction as measurement-driven API work rather than premature micro-optimization.Architecture scenarioMedium~10 min.NETASP.NET CoreC#Practice 2StringBuilder TradeoffsExplains string immutability, concatenation behavior, and pragmatic use of StringBuilder in .NET.Comparison questionEasy~5 min.NETASP.NET CoreC#Practice 3Span and PoolingIntroduces lower-level allocation tools while emphasizing measurement, ownership, and safe usage.Concept questionHard~9 min.NETASP.NET CoreC#Practice 4Streaming DataCovers large exports, uploads, and API responses where bounded memory matters more than convenience.Architecture scenarioMedium~10 min.NETASP.NET CoreC#Practice 5Unbounded CacheExplains cache memory growth, eviction, size limits, stale data, and why cache design needs explicit bounds.Architecture scenarioMedium~10 min.NETASP.NET CoreC#Practice 6EF Tracking MemoryConnects EF Core change tracking to object retention, query shape, projections, and read-only API performance.Concept questionMedium~7 min.NETASP.NET CoreC#Practice 7Batch Memory SafetyCovers chunking, bounded concurrency, scoped dependencies, progress, retries, and avoiding full-dataset memory spikes.Architecture scenarioHard~12 min.NETASP.NET CoreC#Practice

Practice order

7 drillsOne at a time

1Hot Path AllocationsUp next / Medium / ~10 min
2StringBuilder TradeoffsEasy / ~5 min
3Span and PoolingHard / ~9 min
4Streaming DataMedium / ~10 min
5Unbounded CacheMedium / ~10 min
6EF Tracking MemoryMedium / ~7 min
7Batch Memory SafetyHard / ~12 min