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126 questions, 454 terms and 400 topics in 20 areas.
17 results for “Rate Limiting”
Rate Limiting
Bounding how many requests a caller may make in a window, to protect capacity and enforce fair use.
API Gateway
A single entry point in front of a set of services that handles authentication, rate limiting, routing and protocol translation.
Burn Rate Alerting
Paging when the error budget is being consumed fast enough to matter, rather than when a component crosses a threshold.
DORA Metrics
Four measures of software delivery performance — deployment frequency, lead time for change, change failure rate, and time to restore service.
Failure Threshold
The condition that trips a circuit breaker — best expressed as a failure rate over a rolling window with a minimum request volume, not as a consecutive-failure count.
Little's Law
In a stable system, the average number of items in it equals the arrival rate times the average time each spends in it — L = λW.
Message Queue
A store that holds messages until a consumer processes them, decoupling producer availability and rate from consumer availability and rate.
Permission Boundary
A policy limiting the maximum permissions an identity can have, used so that the ability to create roles does not become the ability to grant unlimited privilege.
RED Method
A minimal per-service dashboard: Rate, Errors, Duration — the request-centric view of whether users are being served.
Throughput
The rate of work a system completes per unit of time — and a quantity that trades against latency rather than tracking it.
One customer's batch job saturates a shared service and degrades everyone. Rate limiting them fixes it, until the next customer does the same. What is the structural answer?
Why per customer rate limits keep failing A static limit is set from what that customer was doing, not from what the service can serve. It is reactive — you dis
You must choose a data store this week. The product team cannot tell you the expected query patterns or the growth rate. What do you do?
What the interviewer is testing How you behave when the information you would like does not exist — which is the normal condition, not the exception. Both "refu
Rate Limiting
Algorithms, shared counters, and signalling rejection properly.
Reverse Proxies
One place for TLS, routing, caching, compression and rate limiting.
Business Metrics
Orders per minute alongside error rate, because healthy is not enough.
Network Security
Segmentation, egress control and limiting lateral movement.
SLO Monitoring
Burn-rate alerting that fires on user impact rather than on thresholds.