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Fundamentals & Scalability — Series 2
Preview — 3 of 10 questions
Employees reach external websites through a company filtering proxy. Separately, visitors reach a public app through a proxy in front of its servers. How are they classified?
AApplication cache for employees; forward proxy for the app.
BForward proxy for employees; reverse proxy for the app.
CLoad balancer for employees; recursive resolver for the app.
DReverse proxy for employees; forward proxy for the app.
Users far from the origin repeatedly download the same public JavaScript bundle. Which change most directly reduces the distance these downloads travel?
AAdd a read replica next to the origin database.
BMove authentication checks into each user's browser.
CServe the versioned bundle from CDN edge caches.
DIncrease the origin server's database connection pool.
A logged-in users next request may reach any application instance. Which session design supports replacing an instance without losing that users session?
ACopy sessions to another instance only during deployments.
BPin each session to one instance with a routing cookie.
CKeep sessions in each instance's private memory.
DKeep session records in a shared store outside instances.
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