v2.7.0

Changes between 2.6.0 and 2.7.0 (Mar 31, 2026)

Channel.Close Predicates Now Return True Boolean

And not just truthy values (values that are not nil or false).

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

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.

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.

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 the 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