Java Guru
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Featured
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Java Interview Prep #1: Java Core and Concurrency
Published: at 10:00 AMA practical Java Core interview guide covering JVM memory, garbage collection, the Java Memory Model, and concurrency, from foundational questions to production trade-offs.
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High-Load System Design: Managing Traffic Spikes End to End
Published: at 04:32 AMA practical guide to reducing load across the frontend, cache, database, backend, request path, monitoring, and autoscaling layers.
Recent Posts
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Production Order Processing with AWS Architecture Patterns
Published: at 10:00 AMA source-disciplined design for a multi-AZ, queue-backed order-processing system, including its failure boundaries and delivery guarantees.
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How Discord Stores Billions of Messages: Lessons from the Cassandra→ScyllaDB Migration
Published: at 10:00 AMA source-backed analysis of Discord's message-storage evolution, Cassandra data modeling, and a clearly separated ScyllaDB migration design.
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Dropbox Magic Pocket: Designing Exabyte-Scale Blob Storage
Published: at 10:00 AMA source-disciplined system-design analysis of immutable blobs, erasure coding, tiered storage, and durability at exabyte scale.
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Spanner: Global Distribution, External Consistency, and TrueTime
Published: at 10:00 AMA source-disciplined system-design analysis of external consistency, time uncertainty, Paxos-style replication, sharding, and multi-region operation.