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7 docs tagged with "streams"

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Amazon DynamoDB

DynamoDB mastery for DVA-C02. Covers partition keys, sort keys, GSI vs LSI, read/write capacity modes, DynamoDB Streams, DAX, TTL, transactions, and the most common exam scenarios and anti-patterns.

Chapter 10 — Streams

Complete guide to Java Stream pipelines: creating streams, intermediate vs terminal operations, Optional, Collectors (groupingBy, partitioningBy, joining, teeing), primitive streams, flatMap, lazy evaluation, and parallel streams with thread-safety warnings.

Chapter 8 — Lambdas & Functional Interfaces

Complete guide to lambda expressions, method references, built-in functional interfaces (Supplier, Consumer, Function, Predicate, UnaryOperator, BinaryOperator), variable capture rules, and functional composition with andThen/compose.

Redis Streams

Complete guide to Redis Streams — append-only logs, consumer groups, message acknowledgement, and comparison with Kafka for senior engineers.