Token bucket algorithm in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the Token Bucket Algorithm?

It is a method to control the rate of data flow by using tokens that allow sending data only when tokens are available.

beginner

How does the token bucket refill work?

Tokens are added to the bucket at a fixed rate until the bucket reaches its maximum capacity.

beginner

What happens when there are no tokens in the bucket?

No data can be sent until new tokens are added to the bucket.

intermediate

Why use the Token Bucket Algorithm in REST APIs?

To limit the number of requests clients can make in a time period, preventing overload and ensuring fair use.

intermediate

What is the difference between Token Bucket and Leaky Bucket algorithms?

Token Bucket allows bursts of traffic up to bucket size, while Leaky Bucket enforces a steady output rate without bursts.

In the Token Bucket algorithm, what does a token represent?

A A data packet

B Permission to send a unit of data

C A time interval

D A user request

Each token allows sending one unit of data, controlling the flow rate.

What happens when the token bucket is full and new tokens arrive?

A Tokens are discarded

B Tokens are stored in overflow

C Tokens replace old tokens

D Bucket size increases

Tokens beyond the bucket capacity are discarded to limit burst size.

Which scenario best fits using the Token Bucket algorithm?

A Randomly dropping requests

B Enforcing a strict fixed rate with no bursts

C Blocking all requests after a limit

D Allowing bursts of requests up to a limit

Token Bucket allows bursts up to the bucket size, then limits further requests.

How does the Token Bucket algorithm help REST APIs?

A By caching API responses

B By encrypting API requests

C By limiting request rate to prevent overload

D By logging user activity

It controls how many requests a client can send in a time frame.

What is the main difference between Token Bucket and Leaky Bucket algorithms?

A Token Bucket allows bursts; Leaky Bucket enforces steady rate

B Leaky Bucket allows bursts; Token Bucket enforces steady rate

C Both allow unlimited bursts

D Both enforce strict fixed rates

Token Bucket supports bursts by accumulating tokens; Leaky Bucket smooths traffic.

Explain how the Token Bucket algorithm controls the rate of requests in a REST API.

Think about tokens as tickets to send requests.

Describe the difference between Token Bucket and Leaky Bucket algorithms and when you might use each.

Consider how each handles sudden spikes in requests.