Best way to store replies from users in Facebook chat?

Question

Create a Facebook Messenger bot using Claudia JS and an AWS Lambda deployment plan.

I want to ask the user a series of questions.

When the user answers with an answer, I need to save it for later, and as soon as I have all the necessary information, I will pass the answers to the function.

What is the best way to save this information?

I was thinking of some kind of caching layer like redis, but since it is stored in RAM, I will lose it when the lamda server shuts down. Mongodb seems to have a lot of connection overhead, but at least it will be persistent.

Maybe just a simple mySQL server?

How is everyone doing this? I feel that there is a simple solution that I am missing.

Answer 1

First, I will answer the question about how I do it . I am using MongoDB. I played around with the ideas you mentioned, but quickly crossed out solutions in memory (Memcached, Redis) for the same reason. My final solution ended up either in a relational database or in noSQL like MongoDB. Honestly, in my project scale, I did not think about reliable performance comparison between types of databases.

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