Mastering Chain Creation in LangChain: LCEL and Legacy Chains
1. Introduction to LCEL and Legacy Chains
In the world of chain creation, there are two main approaches: LCEL Chains and Legacy Chains.
1.1 LCEL Chains
LCEL stands for “LangChain Execution Language” and is a modern way to create chains. It uses a domain - specific language that allows for granular control over each step. Here are its key features:
- Flexibility : You can define complex logic and integrate various operations seamlessly.
- Scalability : Due to its modular nature, it can be easily scaled and modified, making it suitable for growing applications.
- Use Case : For example, if you need to develop a syste
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