Information Technology Reference
In-Depth Information
in the middle of editing a file when the local computer
crashes—perhaps due to a power failure. Discuss the likely
state of the remote file when power is restored. For example,
consider which, if any, of the user's changes might be found
within the centralized copy of the file.
4.
Most word processors allow a user to save the current file, at
which time a client computer sends updates to the central
computer. To what extent is this capability compatible with
writethrough, writeonclose, and writedelayed approaches
to the cachecoherence problem? For example, what effect
would a “save current file” command have if the word
processor used a writethrough strategy for the cachecoher
ence problem?
