# Vortex FSST
A Vortex Encoding for Binary and Utf8 data that utilizes the [Fast Static Symbol Table](https://github.com/spiraldb/fsst)
compression algorithm.
## LIKE Pushdown
The FSST encoding has a specialized LIKE fast path for a narrow subset of
patterns:
- `prefix%`
- `%needle%`
Unsupported shapes, including `_`, `%suffix`, or patterns with interior
wildcards, fall back to ordinary decompression-based LIKE evaluation.
There are also two implementation limits on the pushdown path, both measured in
pattern bytes:
- `prefix%` supports up to 253 bytes.
- `%needle%` supports up to 254 bytes.
Patterns beyond those limits are still evaluated correctly, but they do so via
the fallback path instead of the DFA matcher.