https://github.com/ruby-amqp/amq-protocol - v2.6.0

Changes between 2.5.1 and 2.6.0 (Mar 30, 2026)

Channel.Close Predicate Methods

Channel::Close now provides predicate methods for identifying common
channel closure reasons by reply code and text:

• #delivery_ack_timeout?: consumer delivery acknowledgement timeout
• #unknown_delivery_tag?: unknown delivery tag (e.g. double ack)
• #message_too_large?: message exceeded the configured max size

- Ruby
Published by michaelklishin about 1 month ago

https://github.com/ruby-amqp/amq-protocol - v2.5.0

Changes between 2.4.0 and 2.5.0 (Dec 31, 2025)

Additional Consumer Hot Path Optimizations

A few more decode method optimizations for consumer delivery code paths.

- Ruby
Published by michaelklishin 3 months ago

https://github.com/ruby-amqp/amq-protocol - v2.5.1

Changes between 2.5.0 and 2.5.1 (Jan 19, 2026)

Windows Installation Fixes

2.4.0 and 2.5.0 versions unintentionally included files that were
symlinks, which caused installation on Windows to fail.

- Ruby
Published by michaelklishin 3 months ago

https://github.com/ruby-amqp/amq-protocol - v2.4.0

Changes between 2.3.4 and 2.4.0 (Dec 30, 2025)

Performance Improvements

Optimized encoding and decoding hot paths:

• Built-in Q>/q> packing/unpacking directives are 6-7x faster than the original implementation (that originally targeted Ruby 1.8.x)
• Switched to unpack1 instead of unpack().first throughout
• Use byteslice instead of slice for binary string operations
• Use getbyte for single byte access (4x faster than alternatives)
• Adopted frozen_string_literal pragma

The improvements on Ruby 3.4 are very meaningful:

• AMQ::Pack.pack_uint64_big_endian: about 6.6x faster
• AMQ::Pack.unpack_uint64_big_endian: about 7.2x faster
• Basic.Deliver.decode: about 1.7x faster
• Basic.Ack/Nack/Reject.encode: about 2.5x faster

- Ruby
Published by michaelklishin 4 months ago