2 links tagged with all of: web-development + performance + debugging
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The author investigates a significant performance issue in a web app's dashboard that loads slowly on Safari due to a specific emoji font, Noto Color Emoji. By eliminating the emoji, they discover it causes excessive layout times, leading to a bug report for a potential fix.
Microsoft introduces the Delayed Message Timing API to help web developers diagnose performance issues in complex web applications. This API tracks delays in message processing across different contexts, providing insights into factors like task congestion and serialization overhead.