Explore valuable insights on building resilient systems through real-life scenarios and practical strategies in this 20-minute conference talk from Conf42 IM 2024. Dive into various challenges faced by large-scale systems, including traffic floods, retry storms, and problematic commits. Learn essential prevention techniques such as defensive coding practices, effective logging, and error handling. Discover how to set up and mitigate alerts, prepare for high-velocity events, and conduct thorough self-reviews. Gain actionable takeaways to enhance system resilience based on experiences from industry giants Amazon and Meta.