🚀 Async in Python - Use It With Intent, Not Trend One pattern I’ve seen repeatedly - teams introduce async/await because it feels modern. But async is not about making code “faster.” It’s about handling concurrency efficiently, especially in I/O-heavy systems. If your service spends time waiting (APIs, DB calls, network), async can dramatically improve throughput without increasing infrastructure. 🔥 When Async Makes Sense Use async when your application: ✅ Calls external APIs ✅ Queries databases ✅ Handles multiple concurrent users ✅ Performs network/file I/O ✅ Waits more than it computes In backend systems (like FastAPI), async allows one worker to serve multiple requests while waiting on I/O - improving scalability. ⚠️ When NOT to Use Async Avoid async when: ❌ The workload is CPU-intensive (data processing, ML, encryption) ❌ The library doesn’t support async ❌ The system doesn’t need concurrency ❌ The team isn’t comfortable debugging event loops Async adds complexity. If it’s not solving a real bottleneck, it’s just technical noise. 💡 Practical Rule • I/O-bound → Consider async • CPU-bound → Use multiprocessing/workers • Simple tool/script → Keep it simple Engineering maturity is not about using advanced features. It’s about choosing the right tool for the right problem. How do you decide when to introduce async in your systems? 👇 #FastAPI #Python #BackendDevelopment #API #SoftwareEngineering #Microservices #DevOps #cloud #automation #dsa
Async in Python: When to Use It for Efficient Concurrency
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How We Designed a Python Backend That Handles Millions of Requests A lot of developers believe scaling starts when traffic grows. That's wrong. Scalability starts the moment you design your architecture. In one system I worked on, we had to design a backend expected to handle millions of requests daily. The approach wasn't complicated — but the discipline was. Key decisions: • FastAPI for async I/O workloads • Stateless API services • Horizontal scaling behind a load balancer • Redis for caching hot queries • Background processing with workers The biggest mistake teams make is building synchronous systems for asynchronous problems. Scaling Python isn't about rewriting everything in Go. It's about understanding: • I/O bottlenecks • concurrency • architecture boundaries Most performance problems in backend systems are not language problems. They are architecture problems.
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Python Development in 2026: It’s no longer just about the code. If you still see Python as just a scripting language, you’re looking at it through a 2015 lens. Backend work now feels closer to system design than feature coding. Writing logic is only part of the job. The real value is in how systems talk to each other, scale, and stay secure. Here’s what I’m seeing shift: 1. APIs → Orchestrated Systems: -It’s not just about wiring a REST endpoint. We’re defining workflows using OpenAPI 3.1 and machine-readable specs so services and AI agents can move through systems without human hand-holding. 2. Async by default: -If you’re not comfortable with asyncio or FastAPI, you’re behind. Concurrency isn’t an optimization anymore. It’s the baseline. Thousands of parallel requests should feel normal. 3. Infrastructure is part of the role: -Code is half the work. The other half is Docker, CI/CD, Kubernetes YAML, and making sure your data layer scales when traffic doubles overnight. If you can’t read deployment configs, you’re limiting yourself. What actually matters right now: Strong Python 3.x with real type usage, not decorative hints Security beyond basic JWTs. OAuth 2.1 and PKCE should not sound exotic Integration tests that hit real external APIs, not just mocks The industry doesn’t need more people who can write functions. It needs engineers who understand flow, failure modes, performance, and trust boundaries. Focus less on syntax. Focus more on system integrity. #Python #BackendEngineering #FastAPI #CloudNative #SoftwareArchitecture #APIDesign
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OpenAI acquiring Astral to pull Python’s most popular dev tools into Codex is a classic platform move: stop being “a model that writes code” and start owning the toolchain developers live in. When you control formatting, dependencies, builds, and the agent that edits code, you control the workflow - and workflows are where switching costs are born. This matters because the coding layer is the gateway to enterprise agents. Today it’s Python tooling. Tomorrow it’s CI/CD, ticketing, infrastructure-as-code, and deployment permissions. That’s enormous leverage - and enormous risk if governance doesn’t keep up: supply chain attacks, license contamination, insecure defaults, and “agent drift” that quietly changes production behavior. My controversial view: this acquisition isn’t about developer happiness - it’s about lock-in. OpenAI wants to be the IDE + build system + agent brain, so leaving becomes as painful as migrating clouds. Best practices for teams adopting Codex-style platforms: require signed outputs, enforce human review on critical paths, run dependency scanning, keep reproducible builds, and maintain an escape hatch (toolchain portability, data export, model routing). If one vendor owns your coding agent and your Python toolchain, who really owns your software supply chain - and what happens when that vendor’s incentives shift? #DevTools #SoftwareSupplyChain #AIGovernance https://lnkd.in/gq7GHJg5
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Most Python codebases rely on dynamic typing — until they scale. At scale, silent bugs, fragile refactors, and unclear contracts become real productivity killers. One of the most powerful (and underused) tools in modern Python for building robust, production-grade systems is: Protocols + Generics These features bring interface-driven design and compile-time safety to Python — without sacrificing flexibility. 🔹 Protocols enable structural typing (“if it behaves like X, it is X”) 🔹 Generics allow reusable, type-safe abstractions 🔹 No inheritance required — just the correct shape 🔹 Perfect for Clean Architecture, DI, and testable systems Example use cases: ✅ Repository patterns (DB / API / Cache interchangeable) ✅ Plugin systems ✅ SDK & library design ✅ Service layer decoupling ✅ Mocking without brittle test doubles ✅ Large-scale refactoring with confidence By depending on capabilities instead of concrete classes, your business logic becomes storage-agnostic, test-friendly, and future-proof. In modern Python (3.11+), combining strong typing + static analysis (Pyright/mypy) delivers many benefits traditionally associated with statically typed languages — while retaining Python’s developer velocity. If you’re building serious backend systems, this is no longer optional knowledge — it’s a force multiplier. Dynamic language. Static guarantees. Clean architecture. Read More: https://lnkd.in/gRtdPtP2 #Python #SoftwareEngineering #BackendDevelopment #CleanArchitecture #TypeSafety #StaticTyping #Programming #Developers #TechLeadership #SystemDesign #APIDevelopment #CodeQuality #ScalableSystems #DesignPatterns #ProgrammingLanguages #PythonDeveloper #SoftwareDevelopment #TechInnovation #EngineeringExcellence #CodingBestPractices
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🚀 Microsoft Agent Framework is now Release Candidate 🤖 If you’re building agents with Semantic Kernel or AutoGen, now’s the time to migrate. Agent Framework unifies both into a single, stable framework for .NET and Python, with a consistent model for building and orchestrating AI agents 🔧🧠 ✅ Stable APIs ✅ Unified agent model ✅ Built for production 🔗 Read more: https://lnkd.in/eBQuxxKv #AI #Agents #SemanticKernel #AutoGen #Microsoft #GenAI
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The gap between throwing prompts at Claude Code and actually getting reliable results is wide, and basic programming concepts end up mattering a lot. You need a grounding in systems thinking, because most failures come from brittle systems that aren’t designed to produce consistently accurate outputs. It helps to understand APIs so you can influence the tools models use and integrate differentiated data to generate better results. And familiarity with the ecosystem around GitHub, AWS, Python, etc. lets you extend what tools like Claude Code can do far beyond just sitting there and prompting. These skills compound. A lot of people sign up for AI tools, generate a website landing page, and don’t make it much further unless they’re genuinely curious and willing to think like an engineer. Claude Code will nail the hardest technical problem and completely miss the most obvious one. You have to assume nothing and design around that, and that takes a certain kind of mind.
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Most Python developers don’t actually spend their day building new ideas. They spend it: • fixing small bugs • writing boilerplate tests • updating documentation • refactoring code • answering questions about the repository Important work — but not the work that moves systems forward. A shift is happening. With OpenAI agent skills, developers can move from writing code to delegating engineering tasks. Instead of doing everything manually, you can give the agent a task: “Add caching to the API layer and write unit tests.” The agent can then: • read the repository • plan the changes • modify the relevant files • run tests • prepare a pull request for review Your role changes. You are no longer just producing code. You are orchestrating work. The most valuable developer skill is no longer typing faster. It is defining clear tasks, reviewing outputs, and guiding system architecture. We are entering the era where developers don’t just build software. They lead AI engineering agents that build it with them.
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It is 2026 and one of the most widely used SDKs in the world, AWS Python SDK, still does not natively support async and await. This issue was opened 11 years ago: https://lnkd.in/ddNdJxXm Let that sink in. During this time, Python evolved. Async programming became standard. Modern applications increasingly depend on non blocking IO. Yet developers still rely on wrappers, thread pools, or unofficial solutions to fill this gap. And this is not an isolated case. Celery is another example. It is one of the most important task queue frameworks in Python. It is robust and widely adopted, but native async support is still tied to the version 6 milestone: https://lnkd.in/dJDqQ7FU Looking at its progress, it is hard not to feel like this milestone may never actually be completed. Many developers still rely on older approaches like gevent or move to alternative tools. This is not criticism. These projects are fundamental to the software industry and represent years of incredible work. But they reveal something important. Open source does not evolve by itself. We are now in a moment where building software has never been more accessible. AI has dramatically increased developer productivity. Tasks that once took days can now take hours. The barrier to contributing has never been lower. And yet, critical parts of our ecosystem are still waiting for contributors. Maybe the problem is no longer complexity. Maybe it is initiative. We all depend on open source every day. That should come with a sense of responsibility for its future. I have been reflecting on this myself. It is easy to point out what is missing. It is harder, and more meaningful, to step in and help build it. Open source is the foundation of modern software. If we want a better future, we need to start building it ourselves.
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Async is powerful - but only when your system is I/O-bound. If your service is waiting (API calls, DB queries, network), async improves throughput. If it’s computing heavily, async won’t save you - multiprocessing will.