Page caching:
• If enables, page caching will only be used for anonymous users.
• If you enable page caching, the entire HTML of each page will be stored in the database. This significantly reduces the amount of queries needed.
• This automatically means that blocks will also get cached, disregarded their own cache settings.
• If Varnish is configured, this will also enable varnish caching
• The page cache max-age will be used (see below) for each page.
• You can check the "X-Drupal-Cache" HTTP header to check if this cache is HIT.
Block caching:
• If you enable block caching, without enabling page caching, the block cache settings will be used (for anonymous and authenticated).
• The defaults for most blocks is "don't cache" because that is the default for blocks who don't have their cache settings specifically declared.
• You can use block_cache_alter module to set this for each block.
• When it's block created by Views, you can set the cache settings for a block in Views.
caching
"Caching" (pronounced exactly like "cashing") is the action of placing things in caches. A cache is a hidden store or supply of something, usually not very large.
If a client send a query requesting for a particular web page to the DNS server and if the DNS server resolves the page from the other DNS servers & it will be store the same page in the DNS cache and it will give the response to the client with the requested page. If again the same web page is requested by any client then DNS server will get the web page from the DNS cache instead of again fetching the same page from the internet. With this there wont be any delay for the client to get the web page. This helps in bandwidth control. This is how the DNS server caching works.
Web Caching
Well click on the link. The first block of text on that page is he one you are looking for.
You cannot block a page, you can only report a page or, ban users from your page. Until the page is shut down, you will, along with everyone be able to view it.
Caching
user's browser holds in cache web pages that have already been visited in case the same page is revisited.
Your browser holds in a cache web pages that you've already seen, in case you ask for the same page again.
This a computer science question. If the requested page does not happen to be in the pool, the request cannot be fulfilled before a dirty page has been saved to the cached media and thus becomes available for caching the request.
A caching proxy is a proxy which provides temporary storage for results of expensive operations.
The DIV tag will create a division on a page, and its default display value is block.