Package python-module-zope.bforest: Information

BForests are dictionary-like objects that use multiple BTrees for a
backend and support rotation of the composite trees. This supports
various implementations of timed member expirations, enabling caches and
semi-persistent storage. A useful and simple subclass would be to
promote a key-value pair to the first (newest) bucket whenever the key
is accessed, for instance. It also is useful with disabling the rotation
capability.

Like btrees, bforests come in four flavors: Integer-Integer (IIBForest),
Integer-Object (IOBForest), Object-Integer (OIBForest), and
Object-Object (OOBForest). The examples here will deal with them in the
abstract: we will create classes from the imaginary and representative
BForest class, and generate keys from KeyGenerator and values from
ValueGenerator. From the examples you should be able to extrapolate
usage of all four types.

First let's instantiate a bforest and look at an empty example. By
default, a new bforest creates two composite btree buckets.

Package python-module-zope.bforest: Information

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