Which statement about write behavior of FlexCache is true?

Which statement about write behavior of FlexCache is true?

• A. FlexCache provides write-back caching capabilities to improve performance for high-write workloads.
• B. FlexCache has no write-back caching capability.
• C. FlexCache writes data to origin on every write immediately.
• D. FlexCache blocks all writes locally and only allows reads.

Answer: (B)

FlexCache is designed to speed up access by caching frequently read data at the edge, but it does not cache writes. In this setup, writes are performed against the origin and are not stored in the local edge cache. This keeps data consistent across clients and sites, avoiding the complexities and risks of writing through a cached layer. Therefore, the statement that FlexCache has no write-back caching capability is the correct description of its write behavior. The cache improves read performance and reduces WAN traffic, but it does not provide caching for writes, so neither write-back nor local write blocking applies.

FlexCache is designed to speed up access by caching frequently read data at the edge, but it does not cache writes. In this setup, writes are performed against the origin and are not stored in the local edge cache. This keeps data consistent across clients and sites, avoiding the complexities and risks of writing through a cached layer. Therefore, the statement that FlexCache has no write-back caching capability is the correct description of its write behavior. The cache improves read performance and reduces WAN traffic, but it does not provide caching for writes, so neither write-back nor local write blocking applies.