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Eliminating Java cold starts with AWS Lambda Managed Instances

calendar_today July 13, 2026 person Jay Colodner domain amazon-ec2

A single cold start can push your Java Lambda function’s response time from milliseconds to seconds, enough to violate your p99 SLA, timeout a downstream service, and page your on-call. The Java Virtual Machine (JVM) performs best in long-running processes. Its Just-In-Time (JIT) compiler progressively optimizes code over thousands of invocations.

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