1 files changed, 6 insertions, 16 deletions

diff --git a/include/InMemoryBackend.h b/include/InMemoryBackend.h
index 8f7f50a..55472a8 100644
--- a/include/InMemoryBackend.h
+++ b/include/InMemoryBackend.h
@@ -11,33 +11,23 @@
 
 /**
  * @file InMemoryBackend.h
- * @brief In-process KV storage backend backed by unordered_maps.
+ * @brief In-process KV storage backend backed by an unordered_map.
+ *
+ * Intended for unit tests where SQLite is not appropriate.  Data does not
+ * survive process exit and is not thread-safe.
+ *
+ * Relation membership is tracked by the Merkle class, not this backend.
  */
 
 namespace nt
 {
-    /**
-     * @interface InMemoryBackend
-     * @brief IStorageBackend implementation that keeps all data in process memory.
-     *
-     * Intended for unit tests where SQLite is not appropriate. Data does not
-     * survive process exit and is not thread-safe.
-     */
     class NT_API InMemoryBackend : public IStorageBackend
     {
     public:
         std::string Put(std::vector<uint8_t> value) override;
         std::optional<std::vector<uint8_t>> Get(const std::string& hash) override;
-        void LinkTuple(const std::vector<std::string>& relation_path,
-                       const std::string& tuple_hash) override;
-        std::vector<std::string> TupleHashes(const std::vector<std::string>& relation_path,
-                                             std::size_t offset,
-                                             std::size_t limit) override;
 
     private:
         std::unordered_map<std::string, std::vector<uint8_t>> kv_;
-        std::unordered_map<std::string, std::vector<std::string>> index_;
-
-        static std::string PathKey(const std::vector<std::string>& path);
     };
 }