Testing / Apache JMeter Interview questions
How does JMeter's Cache Manager simulate real browser behavior?
The HTTP Cache Manager mimics how a real browser caches static resources - based on response headers like Expires and Cache-Control - so that on subsequent requests for the same resource within a thread, JMeter can simulate a cache hit and skip re-downloading it, similar to how a returning browser wouldn't re-fetch an unchanged image or script.
This matters for realistic load testing because a real user's browser genuinely doesn't re-request every static asset on every single page view - without cache simulation, a test can generate artificially inflated load against static content that real traffic wouldn't actually produce at that volume.
It's typically used alongside the Cookie Manager, since together they simulate the two main pieces of browser state - cached resources and session cookies - that a real returning visitor's browser would carry between requests, which a fresh, stateless sampler wouldn't replicate on its own.
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