The Secret Life of JavaScript: Page Lifecycle Management Optimizing background tab performance and resource management with the Page Visibility API #JavaScript #PageVisibility #WebPerformance #WebAPIs Margaret is a senior software engineer. Timothy is her junior colleague. They work in a grand Victorian library in London — the kind of place where code quality is the unspoken objective, and craftsmanship is the only thing that matters. Episode 39 The Redundant Requests Timothy checked his server logs and sighed. The cloud metrics showed a continuous, heavy stream of background API traffic hitting his database endpoints, even though it was lunchtime and half the engineering team was away from their desks. He walked away from his terminal and stepped into the library, where Margaret was reviewing a technical manuscript. "The application is wasting massive client and server resources," Timothy explained. "When a user leaves our dashboard open in a background tab for hou...