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Ever imagined receiving emails that feel uniquely tailored just for you? 💌 Zalando Engineering team walks us through their journey of creating personalized newsletter emails using AWS. They provide insights how they harnessed AWS services—like Lambda, S3, and SES—to dynamically generate and distribute custom content at scale. It’s a fascinating look into building a system that adapts to individua...

Ever wish your chatbot could double-check its own answers or plan out a complicated task before diving in? That’s where Agentic Design Patterns come in! They’re a set of clever strategies that make AI more reliable and capable by adding features like: * Reflection – A built-in ‘review phase’ where AI spots mistakes and polishes its answers. * Tool Use – The power to call external APIs or databases...

Ever wondered how a platform like LinkedIn handles the sheer scale of its data - enough to fill over a billion USB drives? Behind the scenes, they’ve been pushing Hadoop’s limits, managing an exabyte of data while tackling challenges like keeping things fast, secure, and endlessly scalable. From clever tweaks to Java heap management to building tools like Wormhole for lightning-fast data transfers...

Ever wondered how Twitter manages the vast ocean of data generated daily by millions of users? What challenges arise when migrating over an exabyte of data to the cloud, and how can such a colossal task be executed seamlessly? We delve into Twitter's ambitious journey of transitioning its massive data infrastructure to Google Cloud. Discover the innovative strategies employed, the obstacles overco...

Curious about how Uber powers a global platform that processes millions of data points every second? We dive deep into the technology that makes it possible: from Apache Mesos’ dynamic resource management to Cassandra’s high-speed data storage and Kafka’s real-time data streaming. Discover how Uber’s architecture handles massive demand with low latency and high resilience, and what it takes to kee...

Discover how Spotify is revolutionizing music recommendations through reinforcement learning. We delve into their innovative use of TensorFlow and TF-Agents to simulate user listening experiences, enabling the development of advanced recommendation systems without direct user interaction. Learn about the creation of the Action-Head DQN, a custom deep Q-network designed to navigate the complexities...

Ever wondered how some software designs seem effortlessly elegant, like a puzzle where every piece fits perfectly? That’s the magic of design patterns —tried-and-true solutions to common problems that developers face, hidden in plain sight across all well-structured systems. They’re like secret recipes that make code adaptable, maintainable, and powerful, allowing developers to solve tricky proble...

slys.dev is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber. Designing data-intensive applications is about crafting systems that can effortlessly handle massive amounts of information while staying fast, reliable, and scalable. It’s a balancing act between choosing the right data models, understanding distributed systems, and o...

Software architecture goes far beyond picking a framework or database—it's about shaping the very foundation of a system. How should the pieces fit together? How will the components talk to each other? A well-crafted architecture can unlock seamless development, effortless deployment, and streamlined maintenance. But get it wrong, and you could face a cascade of problems: sluggish performance, cos...