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Douglas Carmo

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Two-Layer Idempotency: Why Not Every Settlement System Needs an Outbox

Two-Layer Idempotency: Why Not Every Settlement System Needs an Outbox

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5 min read

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An 8,000 trade settlement simulator shows where virtual threads win big and where CPU-bound work exposes the limit of Loom

An 8,000 trade settlement simulator shows where virtual threads win big and where CPU-bound work exposes the limit of Loom

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6 min read
Stop Guessing Batch Sizes: High-Performance Bulk Inserts in Spring Boot with PostgreSQL COPY

Stop Guessing Batch Sizes: High-Performance Bulk Inserts in Spring Boot with PostgreSQL COPY

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6 min read
Don t Lock Your API - Lock Your Scheduler Instead

Don t Lock Your API - Lock Your Scheduler Instead

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5 min read
When NASDAQ Freezes: Chaos Engineering a Stock Quotes API with Java and ToxiProxy

When NASDAQ Freezes: Chaos Engineering a Stock Quotes API with Java and ToxiProxy

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7 min read
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