CockroachDB's release of the beta-20170223 version introduced a new arbitrary-precision decimal package for Go, called apd, which replaces the previous DECIMAL type implementation in CockroachDB and is available for public use. This package addresses the need for exact number representation within an arbitrarily large range, a requirement not adequately met by standard integer and float types or existing Go decimal packages. Apd offers features like panic-free operation, support for standard functions, accurate and configurable precision, good performance, and the ability to handle conditions such as overflow and underflow. It consists of two main types, Decimal and Context, which allow for a wide range of precise and efficient decimal computations. Implementing apd in CockroachDB has enhanced its performance and accuracy, achieving closer parity with Postgres, and it is expected to be a valuable resource for the Go community, with future plans to expand its functionality. The package is open-source under the Apache license and welcomes contributions and feedback from the community.