Original author(s) | Michael Bolin |
---|---|
Developer(s) | Meta Platforms, Inc. |
Initial release | April 17, 2013 [1] |
Stable release | 2021.01.12.01 / January 12, 2021 [2] |
Repository | |
Written in | Buck1 – Java Buck2 – Rust |
Operating system | Cross-platform |
License | MIT [3] or Apache License 2.0 [4] |
Website | buck2 |
Buck is a multi-language build system developed and used by Meta Platforms, Inc. It was designed for building small, reusable modules consisting of code and resources within a monorepo. [5] It supports many programming languages, including C++, Swift, Unix Shell, Java, Kotlin, Python, Lua, OCaml, Rust and Go. It can produce binary outputs for a variety of target platforms including iOS, Android, .NET, and Java virtual machine (VM) runtime systems. Licensing for Buck1 is under Apache License 2.0, while Buck2 is under either MIT or Apache 2.0. [3] [4]
Buck requires the explicit declaration of dependencies. Because all dependencies are explicit and Buck has a directed acyclic graph of all source files and build targets, Buck can perform incremental recompilation, only rebuilding targets downstream of files that have changed. Buck computes a key for each target that is a hash of the contents of the files it depends on. It stores a mapping from that key to the build target in a build cache.
In 2013, Buck1 was released. One of the key features was the ability to share build results between multiple developers and continuous integration (CI), as Buck1 supports a HTTP Cache API. [6]
In 2023, Buck2 was released, claiming that builds are 2x as fast as compared to Buck1. One of the largest changes from Buck1 is that the core is written in Rust instead of Java, and rules are written outside the core in Starlark (the language created for the Bazel build system). [7]
Maven is a build automation tool used primarily for Java projects. Maven can also be used to build and manage projects written in C#, Ruby, Scala, and other languages. The Maven project is hosted by The Apache Software Foundation, where it was formerly part of the Jakarta Project.
Git is a distributed version control system that tracks versions of files. It is often used to control source code by programmers who are developing software collaboratively.
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RocksDB is a high performance embedded database for key-value data. It is a fork of Google's LevelDB optimized to exploit multi-core processors (CPUs), and make efficient use of fast storage, such as solid-state drives (SSD), for input/output (I/O) bound workloads. It is based on a log-structured merge-tree data structure. It is written in C++ and provides official language bindings for C++, C, and Java. Many third-party language bindings exist. RocksDB is free and open-source software, released originally under a BSD 3-clause license. However, in July 2017 the project was migrated to a dual license of both Apache 2.0 and GPLv2 license. This change helped its adoption in Apache Software Foundation's projects after blacklist of the previous BSD+Patents license clause.
Bazel is a free and open-source software tool used for the automation of building and testing software.
FlatBuffers is a free software library implementing a serialization format similar to Protocol Buffers, Thrift, Apache Avro, SBE, and Cap'n Proto, primarily written by Wouter van Oortmerssen and open-sourced by Google. It supports “zero-copy” deserialization, so that accessing the serialized data does not require first copying it into a separate part of memory. This makes accessing data in these formats much faster than data in formats requiring more extensive processing, such as JSON, CSV, and in many cases Protocol Buffers. Compared to other serialization formats however, the handling of FlatBuffers requires usually more code, and some operations are not possible.
In version-control systems, a monorepo is a software-development strategy in which the code for a number of projects is stored in the same repository. This practice dates back to at least the early 2000s, when it was commonly called a shared codebase. Google, Meta, Microsoft, Uber, Airbnb, and Twitter all employ very large monorepos with varying strategies to scale build systems and version control software with a large volume of code and daily changes.
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Buck is designed to build multiple deliverables from a single repository—that is, a monorepo—rather than from multiple repositories