KV Store with Serialization (Basic Operations)

Problem: Implement a KV Store with Serialization (Basic Operations) Implement an in-memory key-value store that serializes/deserializes values before storing/transmitting them (i.e., value encode/decode). Provide the following basic APIs. API Requirements Implement a KVStore that supports: put(key, value): insert or overwrite the value for a key. get(key): return the value for a key; if absent, return empty (e.g., null / None / NOT_FOUND). delete(key): delete a key; no-op if missing. serialize(value) / deserialize(blob): serialize and deserialize values. Serialization Requirements (you may design a simple protocol) The serialized output must be a string or byte array. Deserialization must faithfully restore the original value. Must handle special characters and edge cases (e.g., delimiters inside values, empty strings). Constraints Single-machine in-memory only (no distributed consistency needed). Assume keys are strings. Values are strings (or a small set of types, but include type info in serialization). What to Provide Core data structures and time complexities. At least 5 test cases covering overwrite, delete, empty/special characters, and round-trip correctness. Scale Up to 200,000 operations. Up to 10,000 characters per key/value. Example Input put a hello get a Output hello