Getting Started with SDKs

1

SDK Type

2

Framework Support

FlagSync supports JavaScript in various forms:

Contact FlagSync Support for other languages.

3

Security

Use client-side SDK keys for web/mobile apps; keep server-side keys private to protect sensitive flag rules.

Initialization

  • SDK initialization happens asynchronously—response time, usually 30-50 milliseconds, depends on flag count and ruleset complexity.
  • Use a singleton pattern to avoid memory leaks—SDKs like Nest.js handle this automatically; others require manual setup.

Creating multiple instances can lead to memory leaks and orphaned connections.

Next Steps

Set up and explore FlagSync SDKs: