# Generate ID

Requirements:

Globally unique
Roughly sorted by time
Numerical values only
64 bits
Highly scalable, low latency

Generate ID

# DB Auto-increment

✅ Easy to setup
❌ Only works in a singler server setup
❌ Security issue See: Insecure direct object references

# UUID

✅ Easy to generate, globally unique
❌ Very long, not sorted by time, not numeric

# DB ticket server

✅ DB Auto-increment is well understood
❌ Single Point Of Failure (SPOF) if a server is used
❌ IDs are not sorted if multiple servers are used

# Redis

✅ Dont rely on DB
❌ Adding or removing Redis servers cause complexity

# Twitter Snowflake Id

✅ Open sourced by Twitter
✅ Widely used in the industry
✅ Dicord / Twitter used this

# Refs