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A lightning fast, transactional, file-based FIFO for Android and Java.

Merge pull request #50 from casidiablo/fix-file-expansion

fixed the count of bytes to transfer to the EOF on file expansion
latest commit 379c86d56f
Jake Wharton JakeWharton authored

Tape by Square, Inc.

Tape is a collection of queue-related classes for Android and Java.

QueueFile is a lightning-fast, transactional, file-based FIFO. Addition and removal from an instance is an O(1) operation and is atomic. Writes are synchronous; data will be written to disk before an operation returns. The underlying file is structured to survive process and even system crashes and if an I/O exception is thrown during a mutating change, the change is aborted.

An ObjectQueue represents an ordering of arbitrary objects which can be backed either by the filesystem (via QueueFile) or in memory only.

TaskQueue is a special object queue which holds Tasks, objects which have a notion of being executed. Instances are managed by an external executor which prepares and executes enqueued tasks.

Some examples are available on the website.


Downloadable .jars can be found on the GitHub download page.

You can also depend on the .jar through Maven:

    <version>(insert latest version)</version>


Copyright 2012 Square, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.
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