A company’s ecommerce website is experiencing massive traffic spikes, which are causing performance problems in the company database. Users are reporting that accessing the website takes a long time.

A company’s ecommerce website is experiencing massive traffic spikes, which are causing performance problems in the company database. Users are reporting that accessing the website takes a long time.

A developer wants to implement a caching layer using Amazon ElastiCache. The website is required to be responsive no matter which product a user views, and the updates to product information and prices must be strongly consistent
A . Which cache writing policy will satisfy these requirements?
B . Write to the cache directly and sync the backend at a later time.
C . Write to the backend first and wait for the cache to expire.
D . Write to the cache and the backend at the same time
E . Write to the backend first and invalidate the cache

View Answer

Answer: E