The Ways in “Caching” for Speeding Up Web Server – Part 3

You may read previous posting (Part 1 and Part 2):

- The Ways in “Caching” for Speeding Up Web Server – Part 1

- The Ways in “Caching” for Speeding Up Web Server – Part 2

Fig 01- Spring, painted by David Hockney

By configuration file, we have several following advantages:

- web easily accessed

- shorter time to access

- built-in validation mechanisms for both the schema and the form

- and XML in the configuration becomes much more intelligible.

However, there is no the best way to implement cache strategy, so there is possibility to set up catching by mistake.

 Fig 02- Mask, for illustration only

Fig 03- Garage sales at neighborhood, illustration

Fig 04- Felled trees by David Hockney

The wrong set up means browser not able to validate the cached content. Another possibility that page could load wrong content.

In case of hacking the caching server, all users will get negative impacts on their computers.

Several other disadvantages:

- more expensive

- data are stored temporarily

- store capacity not that much

- less proxy updating

- data may loss due to shutdown of computer

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