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Release It!, 2nd Edition
book

Release It!, 2nd Edition

by Michael T. Nygard
January 2018
Intermediate to advanced content levelIntermediate to advanced
378 pages
11h 34m
English
Pragmatic Bookshelf
Content preview from Release It!, 2nd Edition

Bulkheads

In a ship, bulkheads are partitions that, when sealed, divide the ship into separate, watertight compartments. With hatches closed, a bulkhead prevents water from moving from one section to another. In this way, a single penetration of the hull does not irrevocably sink the ship. The bulkhead enforces a principle of damage containment.

You can employ the same technique. By partitioning your systems, you can keep a failure in one part of the system from destroying everything. Physical redundancy is the most common form of bulkheads. If there are four independent servers, then a hardware failure in one can’t affect the others. Likewise, if there are two application instances running on a server and one crashes, the other will still ...

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Publisher Resources

ISBN: 9781680504552Errata Page