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You can learn important system design concepts for free, covering topics like scalability, availability, CAP theorem, caching, databases, APIs, microservices, and distributed systems. This resource offers clear explanations, interview preparation guides, and practical design problems from easy to hard, helping you understand how to build reliable, scalable software systems. It also provides links to courses, books, newsletters, and videos to deepen your knowledge. Using these materials can improve your skills for system design interviews and real-world software architecture, making you more confident and effective in designing complex systems.
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🌍 In 2023, explorers finished mapping over 75% of the world’s seafloor in high detail, uncovering thousands of undersea mountains and canyons hidden beneath the oceans. ✨
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🌍 Over 80% of Earth’s ocean remains unmapped and unexplored by humans. Modern sonar and robotic submersibles are revealing new mountains, trenches, and species with every deep-sea journey. ✨
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🌍 The first map to show the Americas as a separate continent was made by German cartographer Martin Waldseemüller in 1507. It’s where the name “America” first appeared on a world map. ✨
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🌍 In 2022, explorers used sonar to map a hidden undersea volcano off Madagascar’s coast, revealing a peak 800 meters tall that was completely unknown before their expedition. ✨
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🌎 While mapping the ocean floor in 1947, researchers aboard HMS Challenger discovered the Mid-Atlantic Ridge, revealing Earth's largest mountain range hidden underwater. This seismic finding triggered the theory of plate tectonics—explaining how continents drift. The ridge stretches for over 16,000 kilometers beneath the Atlantic Ocean. ✨
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