Tech-Reader.blog

  The Secret Life of AWS: The Central Nervous System (Amazon EventBridge) How to route complex events and integrate third-party data without writing code #AWS #EventBridge #Microservices #EventDriven 🎧 Audio Edition: Prefer to listen? Check out the expanded AI podcast version of this deep dive on YouTube . 📺 Video Edition: Prefer to watch? Check out the 7-minute visual explainer on YouTube . Part 48 of The Secret Life of AWS Timothy was staring at his architecture diagram. The SNS-to-SQS fanout was working perfectly for the Checkout service. But now, the business was introducing a third-party payment processor. This external SaaS provider sent webhook events every time a transaction cleared, failed, or was flagged for fraud. Timothy mapped out a solution. "I will build an Amazon API Gateway," he explained to Margaret. "It will receive the webhook from the payment provider, trigger a Lambda function to parse the JSON, and then that Lambda will publish the event to a new...

  The Secret Life of Azure: The Librarian with Hands (AI Agents) Turning AI into action with agents and function calling #Azure #AIAgents #GenerativeAI #SmartAutomation 🎧 Audio Edition: Prefer to listen? Check out the expanded AI podcast version of this deep dive on YouTube . 📺 Video Edition: Prefer to watch? Check out the 7-minute visual explainer on YouTube . Agents & Orchestration The library was buzzing, but Timothy was busy running back and forth between the glowing "Voice" desk and the stockroom. "Margaret," Timothy panted, "the Voice is too smart for its own good! It told a patron exactly what they needed for their research, but then the patron asked the library to actually  reserve  the books and  order  the supplies. The Voice just said, 'I'm sorry, I can't do that.' I’m stuck being the middleman again. I’ve given the library a brain, but it doesn't have any hands." Margaret pulled out a small, intricate set of brass keys...

  The Secret Life of Python: The Copy Cat (Deep Copy) Deepcopy vs. Slice: Which one actually protects your data? #Python #DeepCopy #ShallowCopy #CodingTips 🎧 Audio Edition: Prefer to listen? Check out the expanded AI podcast version of this deep dive on YouTube . 📺 Video Edition: Prefer to watch? Check out the 7-minute visual explainer on YouTube . Timothy was pale. He didn't even look up when Margaret walked in with a fresh pot of Earl Grey. "Margaret, I’ve seen a ghost," Timothy whispered. "I was running a simulation for the Chess Club’s upcoming tournament. I made a 'Practice Bracket' so I could test some player movements without touching the 'Official Bracket.' But... when I changed the Practice version, the Official one changed itself." He showed her his code, his hands trembling slightly on the keyboard. # The Official Bracket: A list of teams (nested lists) official_bracket = [[ "Alex" , "Alice" ], [ "Bob" ...

  The Secret Life of AWS: The Fanout (Amazon SNS & Pub/Sub) How to broadcast one event to multiple microservices #AWS #SNS #PubSub #Microservices 🎧 Audio Edition: Prefer to listen? Check out the expanded AI podcast version of this deep dive on  YouTube . 📺 Video Edition : Prefer to watch? Check out the 7-minute visual explainer on YouTube . Part 47 of The Secret Life of AWS Timothy’s Checkout service was finally stable. By routing messages through Amazon SQS, the Checkout process was completely insulated from Inventory database outages. But success brings new requirements. "The product team wants to expand," Timothy told Margaret, mapping out the new flow on the whiteboard. "When a customer clicks 'Buy', we still need to update Inventory. But now, we also need to notify the Fulfillment service to print a shipping label, and we need to trigger the Notification service to email a receipt." Timothy drew three arrows pointing out of the Checkout service. ...

  The Secret Life of Azure: The Voice That Read Everything (RAG) Building private, grounded AI assistants with Azure OpenAI and RAG #Azure #OpenAI #AI #DevOps #GenerativeAI 🎧 Audio Edition: Prefer to listen? Check out the expanded AI podcast version of this deep dive on   YouTube . 📺  Video Edition :  Prefer to watch? Check out the 7-minute visual explainer on  YouTube . Data & AI The library was glowing with the light of the "Smart Index," but Timothy was still watching patrons struggle to synthesize information from twenty different scrolls at once. "Margaret," Timothy said, "the AI Search is brilliant—it finds the right books instantly. But the patrons are overwhelmed. They don't want a list of ten books about 'how to build a bridge'; they just want to know how to build the bridge. They want to talk to someone who has already read every book in the basement and can summarize the answer for them. But I can't be everywhere at once." ...

  The Secret Life of Go: The Mutex Protecting Shared Memory and The RWMutex. #Golang #Concurrency #SystemDesign #CodingTips 🎧 Audio Edition: Prefer to listen? Check out the expanded AI podcast version of this deep dive on  YouTube . 📺  Video Edition :  Prefer to watch? Check out the 7-minute visual explainer on  YouTube . Part 27: Protecting Shared Memory and The RWMutex Ethan stared at his terminal, utterly defeated. "It panics," he said. "Every time I run the load test, the whole server crashes." Eleanor peered over his shoulder at the error message glowing on the screen:  fatal error: concurrent map read and map write . "Ah," Eleanor nodded. "The classic map panic. Show me the cache implementation." Ethan brought up the code. var cache = make (map[string]string) func GetUser (id string) string { // If it's in the cache, return it if val, exists := cache[id]; exists { return val } // Simulate a database f...

  The Secret Life of AWS: The Buffer (Amazon SQS) Why tight coupling is a single point of failure. #AWS #SQS #Microservices #CloudArchitecture 🎧 Audio Edition: Prefer to listen? Check out the expanded AI podcast version of this deep dive on  YouTube . Part 46 of The Secret Life of AWS Timothy watched the graphs on his dashboard turn red. He had built the Checkout microservice and the Inventory microservice. Thanks to Margaret's guidance, they were securely connected across an AWS Transit Gateway. But today, they were both failing. "What happened?" Margaret asked, pulling up a chair. "The Inventory database locked up during a traffic spike," Timothy explained, frantically clicking through CloudWatch logs. "The Inventory service stopped responding. But the problem is... now the Checkout service is crashing too. Customers can't place orders at all." Margaret looked at the architecture diagram. "How does Checkout talk to Inventory?" "It...