# RecursiveChunkingConfiguration Recursive hierarchical chunking strategy with configurable separators and overlap Prefer `builder()` to the canonical record constructor. Builder-based call sites remain source-compatible when optional fields are added in later SDK versions. - `chunkSize` (`Integer`): Maximum size of a chunk (should be \u2264 context window) - `chunkOverlap` (`Integer`): Sliding overlap between chunks - `separators` (`java.util.List`): Hierarchical separator list (order = preference) - `keepStrategy` (`SeparatorKeepStrategy`): How to handle separators after splitting. KEEP_NONE is deprecated and behaves as KEEP_END. - `separatorIsRegex` (`Boolean`): Whether separators are regex patterns - `lengthMeasurement` (`LengthMeasurement`): How to measure chunk length [Java](../../java.md) Related types — open only those used by your request: - [LengthMeasurement](LengthMeasurement.md) - [SeparatorKeepStrategy](SeparatorKeepStrategy.md)