Request limit#19
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This commit introduces rate limiting to the linebot to prevent abuse and ensure fair usage. - Added a new `redis_client.py` to manage the Redis connection. - Added a `RateLimiter` class in `rate_limiter.py` to handle rate limiting logic using Redis. - Modified `text_handler.py` to integrate the `RateLimiter`. - Implemented a check to determine if a user has exceeded their request limit. - If the limit is exceeded, a message is sent to the user informing them of the rate limit and the time remaining until they can make another request. - Added `flex_message.py` to convert flex message to json. - Added `__init__.py` to export the utils. - Added `redis` to `pyproject.toml`. - Added `*.rdb` to `.gitignore`.
This commit introduces Redis integration for rate limiting in the Line Bot application. It includes the following changes: - Added Redis configuration parameters (REDIS_HOST, REDIS_PORT, REDIS_DB) to the .env.example file. - Updated the README.md file to include instructions for installing sqlite3 and redis. - Modified the redis_client.py file to read Redis configuration from environment variables, allowing for flexible deployment. The addition of Redis enables the implementation of robust rate limiting mechanisms, preventing abuse and ensuring the stability of the Line Bot service.
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Add rate limiting to prevent excessive Dify API usage