By Andrew Blum

ISBN-10: 0061994936

ISBN-13: 9780061994937

In Tubes, Andrew Blum, a correspondent at stressed journal, takes us on an enticing, completely attention-grabbing travel backstage of our daily lives and divulges the darkish beating middle of the web itself. A extraordinary trip throughout the courageous new technological international we are living in, Tubes is to the early twenty-first century what Soul of a brand new Machine—Tracy Kidder’s vintage tale of the construction of a brand new computer—was to the past due 20th.

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As every user is directed to his or her “own” server, no shared file area is required. This means that no load distribution among different servers is needed if this solution is used. In very large environments, it may make sense to combine IMAP proxies and the load balancing technique: The proxy assigns connections to balancers on the basis of the user ID, and each balancer distributes its share of the connections to multiple IMAP servers. It is then possible to construct separate mail stores if an individual storage system is overloaded.

To do this, mount the data partition with the option ÒÓ Ø Ñ , and/or enter this option in the » Ø » ×Ø . The Linux kernel will no longer change the 57 4 Selecting a Filesystem Ø Ñ when read accesses occur. 2 Access Control Lists For access to an individual file, the Unix filesystem differentiates users into fixed classes: the owner of the file, users belonging to the same group as the file owner, and all other users (other/world). Access control lists (ACLs) have been added to improve flexibility.

If that is the case, the owner of the directory sees the message as read if other users have already accessed it. In contrast, Cyrus saves flags based on users. If a user changes the Ë Ò flag on a message, this will not affect the message status for other users of the same folder. Û The user has write permissions and may set flags and so on. Û does not permit the user to delete emails. The user may add and delete messages. 4 on page 237) or if the messages are moved automatically using filter scripts (see page 240).

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Tubes: A Journey to the Center of the Internet by Andrew Blum

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