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About Logeshwaran
I am an experienced AWS Full Stack Developer with expertise in building scalable, cloud-native applications using a wide range of technologies, including AWS, Angular, Java, Node.js, Python, Terraform, Docker, and TypeScript. With a strong focus on delivering high-performance solutions, I specialize in leveraging AWS services for cloud architecture, creating dynamic front-end interfaces, and building efficient back-end systems. I have hands-on experience in automating infrastructure with Terraform, containerizing applications using Docker, and implementing DevOps best practices.
Java Virtual Threads vs Traditional Threads: What Nobody Tells You
Posted inDebugging

Java Virtual Threads vs Traditional Threads: What Nobody Tells You

Java 21 virtual threads promise to revolutionize concurrent programming. But the benchmarks hide some critical gotchas. Here is what actually changes and what does not.
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Node.js Event Loop Blocking: The Silent API Killer
Posted inNode.js

Node.js Event Loop Blocking: The Silent API Killer and How to Fix It

Event loop blocking silently destroys Node.js API performance under load — no errors, no crashes. Here's how to find it, measure it, and fix it permanently with worker threads.
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Python's __slots__ Secret: Cut Memory 60%
Posted inPython

Python’s __slots__ Secret: Cut Memory 60% and Speed Up Attribute Access by 35%

Python's __slots__ eliminates the hidden __dict__ overhead on every object instance. For classes with millions of instances, this cuts memory by 60% and speeds up attribute access by 35%.
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Hidden AWS Lambda Cold Start Fix — Zero Cost, Zero Latency
Posted inAWS

Hidden AWS Lambda Cold Start Fix — Zero Cost, Zero Latency

Cold starts are killing your Lambda API. Here are 6 techniques that drop cold start latency from 2s to under 200ms — most of them completely free.
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The V8 JIT Trick That Makes Your JS 3x Faster
Posted inJavaScript

The V8 JIT Trick That Makes Your JS 3x Faster (Without Changing Logic)

Most JavaScript developers don't know how V8's JIT compiler works internally. This one hidden optimization makes your JS 3x faster — no logic changes needed.
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API Debugging in 30 Seconds: Fastest Ways to Fix Issues
Posted inBest Practices Debugging

API Debugging in 30 Seconds: The Fastest Ways to Fix API Issues

Master API debugging in 30 seconds using cURL verbose mode, Postman pre-request scripts, and Chrome DevTools Network tab. Real commands, real examples, zero guessing.
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Time-Saving One-Liners Every Developer Should Know
Posted inJavaScript

Time-Saving One-Liners Every Developer Should Know

Python, JavaScript, and Shell one-liners that actually save time — with explanations of how they work. Variable swapping, deduplication, deep cloning, port killing, and more.
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