<ul data-eligibleForWebStory="true"><li>The third episode of the 'Understanding the System' series delves into the crucial role of databases in modern software systems.</li><li>Key points discussed include relational vs. non-relational databases, core concepts like ACID transactions and normalization, and strategies for scaling databases.</li><li>Tips for optimizing database performance through techniques such as indexing, replication, sharding, and understanding the CAP Theorem were highlighted.</li><li>The episode also covers potential failure modes, safe schema migrations, and encourages viewers to watch the detailed video for a deeper understanding.</li></ul>

Understanding the System 3: Databases

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