Standalone FSST (Fast Static Symbol Table) string compression algorithm. Zero dependency on the Vortex wire format or FFM memory model beyond the JDK's own java.lang.foreign — so the compression algorithm can be iterated on and benchmarked independently.

Reader for the Vortex columnar file format. Zero-copy memory-mapped reads via the Java FFM API (Java 25+), no JNI, no sun.misc.Unsafe.

Writer for the Vortex columnar file format. Produces compressed columnar files readable by any Vortex implementation.