Learn and master software development
Discover and master the technologies behind software engineering. Learn about various aspects of the creation of software systems. become better at programming.
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Latest Articles
From Bare Metal to Containers: A Developer’s Guide to Execution Environments
- January 5, 2026
- 13 min read
- Software platform
Ever had that dreaded ‘but it works on my machine!’ moment? The culprit is often a subtle difference in the execution environment—the …
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Beyond 127.0.0.1: You Own 16 Million Loopback Addresses
- December 29, 2025
- 5 min read
- Operating systems
Many developers use localhost and 127.0.0.1 interchangeably, assuming loopback is limited to a single address. However, the IPv4 specification …
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How to Check TCP Port Reachability in Python (Sync & Async)
- December 22, 2025
- 10 min read
- Python programming , Debugging and troubleshooting
Nothing stalls a deployment quite like a ‘Connection Refused’ error that you didn’t see coming. Whether you’re debugging a …
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