How do you implement Redis Modules and use RedisJSON?

Redis Modules extend Redis with custom data types and commands, while RedisJSON adds native JSON support.\n\n• **What are Redis Modules?**\nPluggable extensions that add new functionality to Redis without modifying core code. Popular modules include RedisJSON, RediSearch, and RedisGraph.\n\n• **RedisJSON Benefits:**\nStores JSON as native data type, supports JSONPath queries, atomic updates on nested fields, and eliminates serialization overhead.\n\n• **Installation:**\nLoad module: redis-server --loadmodule ./rejson.so\nOr in config: loadmodule /path/to/rejson.so\n\n• **Basic RedisJSON Operations:**\nJSON.SET user:1000 . {"name":"John", "age":30}\nJSON.GET user:1000 .name\nJSON.SET user:1000 .age 31\nJSON.ARRAPPEND user:1000 .skills "Redis"\n\n• **Python Example:**\nimport rejson\nrj = rejson.Client()\nrj.jsonset("product:123", ".", {"name":"Laptop", "price":999})\nname = rj.jsonget("product:123", ".name")\n\n• **Use Cases:**\nDocument storage, configuration management, real-time analytics, API response caching, and user profiles.\n\n• **Performance Advantage:**\nDirect JSON manipulation without full document retrieval, atomic operations on nested data, and reduced network overhead.