Quamina is a high-performance Go library for matching patterns against JSON events. It uses a custom NFA/DFA automaton approach internally, supporting exact strings, shell-style wildcards, and a subset of I-Regexp (RFC 9485). Patterns are defined as JSON objects with field/value constraints, and the library provides a concise API to add patterns and efficiently retrieve matches for events. The core is a compact `smallTable` data structure for byte-transition tables, with optimizations like incremental epsilon closures and table-pointer deduplication to keep matching near O(1) for exact patterns. Quamina is version 2.0.1, has zero runtime dependencies, and includes extensive benchmarks and a research subdirectory for performance analysis. It is intended as an embedded library for real-time event classification (e.g., routing, log analysis) rather than a standalone service.