[Solved] How can you securely store session data in a NestJS app to support multiple server instances? — Ans: Use a shared store like Redis with express-session | NestJS

NestJS - Authentication

How can you securely store session data in a NestJS app to support multiple server instances?

AUse a shared store like Redis with express-session

BStore sessions in memory on each server instance

CSave sessions as encrypted cookies only

DUse localStorage on the client to store session data

Step-by-Step Solution

Solution:

Step 1: Understand session storage needs
In multi-server setups, session data must be shared to keep users logged in across servers.
Step 2: Identify best storage option
Using Redis as a shared session store with express-session allows all servers to access the same session data.
Final Answer:
Use a shared store like Redis with express-session -> Option A
Quick Check:
Shared store like Redis = A [OK]

Quick Trick: Use Redis store for sessions in multi-server apps [OK]

Common Mistakes:

Master "Authentication" in NestJS

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