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Distributed Systems

System Design

Rate Limiting vs. Throttling: What’s the Difference?

Jason Yang · 22 Nov, 2025

Rate Limiting vs Throttling: often used interchangeably but different — rate limiting controls user quotas, throttling protects system health. The key differences.

System Design

Reliability vs. Availability

Jason Yang · 17 Nov, 2025

Reliability vs availability: reliability is how long a system runs without failing; availability is how much of the time it's up. Examples and how to raise each.