Web api prevent multiple requests

1. How do I avoid multiple requests to API within a given time?
2. How do I stop duplicate post requests?
3. How would you handle millions of requests in API?
4. Why is my API getting called multiple times?
5. How do you make sure API is called only once?
6. How do you handle multiple HTTP requests?
7. How do I ignore duplicate entries?
8. Why you should avoid duplicate content?
9. CAN REST API handle multiple requests?
10. How many requests per second can a REST API handle?
11. How many requests per second can an API handle?
12. How many API requests is too many?
13. What does too many API requests mean?
14. How to handle 1,000 requests per second?
15. How many requests can web API handle?
16. How many requests per second can a REST API handle?
17. How many requests to a website is too many?
18. How do I throttle API requests?
19. How do you handle API throttling?

How do I avoid multiple requests to API within a given time?

We can avoid calling multiple API services with the help of shareReplay method of RxJS. shareReplay subscribes the observable, caches the response and multicasts it to all the subscribers without calling the API multiple times. Lets see the above example with shareReplay.

How do I stop duplicate post requests?

Using the Idempotency feature is a way of preventing data corruption caused by sending duplicate requests. To send a post request that is "Idempotent safe", simply include an idempotency_key header. The idempotency_key must be unique and should only be used in one request.

How would you handle millions of requests in API?

To handle 'millions of request' the system must be deployed on multiple web servers behind a load-balancer that would round robin between each. if the system is hitting a datastore, a second level cache(ehcache, memcache,etc.) should be used to reduce load on the datastore.

Why is my API getting called multiple times?

Duplicate API Requests: Possible Reasons

There can be different scenarios where an API is called multiple times to get the data. For example, When a user taps on a button multiple times before it gets disabled. At times, one API response causes another API request to execute.

How do you make sure API is called only once?

If you want to run an effect and clean it up only once (on mount and unmount), you can pass an empty array ([]) as a second argument. This tells React that your effect doesn't depend on any values from props or state, so it never needs to re-run.

How do you handle multiple HTTP requests?

There are two basic ways to generate concurrent HTTP requests: via multiple threads or via async programming. In multi-threaded approach, each request is handled by a specific thread. In asynchronous programming, there is (usually) one thread and an event loop, which periodically checks for the completion of a task.

How do I ignore duplicate entries?

Use the INSERT IGNORE command rather than the INSERT command. If a record doesn't duplicate an existing record, then MySQL inserts it as usual. If the record is a duplicate, then the IGNORE keyword tells MySQL to discard it silently without generating an error.

Why you should avoid duplicate content?

Duplicate content confuses Google and forces the search engine to choose which of the identical pages it should rank in the top results. Regardless of who produced the content, there is a high possibility that the original page will not be the one chosen for the top search results.

CAN REST API handle multiple requests?

If you need to make multiple API requests, you can send these API requests concurrently instead of sending them one by one. Sometimes, we need to make multiple API calls at once. For example, let's say we have an array, and we want to make an API request for each element of that array.

How many requests per second can a REST API handle?

The REST API limits the rate of requests you can make to 15 requests per second. If you are performing certain operations that are resource-intensive, you may adversely affect performance of your system.

How many requests per second can an API handle?

In the API Console, there is a similar quota referred to as Requests per 100 seconds per user. By default, it is set to 100 requests per 100 seconds per user and can be adjusted to a maximum value of 1,000. But the number of requests to the API is restricted to a maximum of 10 requests per second per user.

How many API requests is too many?

These plans can vary depending on a particular API or a user's current service plan. But in most cases our servers will reject API requests from a particular application if the request rate exceeds 30 API requests per minute. In this case the client will get an HTTP error with status code 429 “too many requests”.

What does too many API requests mean?

The HTTP 429 Too Many Requests response status code indicates the user has sent too many requests in a given amount of time ("rate limiting"). A Retry-After header might be included to this response indicating how long to wait before making a new request.

How to handle 1,000 requests per second?

To handle high traffic, you should setup Load Balancer with multiple node/instances. Better to go with Auto Scaling on Cloud server. It will increase the instances as per high load (number or request) and again decrease the instances when there will be low number of requests. Which is cost effective.

How many requests can web API handle?

In the API Console, there is a similar quota referred to as Requests per 100 seconds per user. By default, it is set to 100 requests per 100 seconds per user and can be adjusted to a maximum value of 1,000. But the number of requests to the API is restricted to a maximum of 10 requests per second per user.

How many requests per second can a REST API handle?

The REST API limits the rate of requests you can make to 15 requests per second. If you are performing certain operations that are resource-intensive, you may adversely affect performance of your system.

How many requests to a website is too many?

How Many HTTP Requests Should Web Pages Have? You should strive to keep the number of HTTP requests under 50. If you can get requests below 25, you're doing amazing. By their nature, HTTP requests are not bad.

How do I throttle API requests?

One way to implement API throttling in distributed systems is to use sticky sessions. In this method, all requests from a user are always serviced by a particular server. However, this solution is not well-balanced or fault tolerant. The second solution to API throttling in distributed systems are locks.

How do you handle API throttling?

Best practices to handle throttling

The following are best practices for handling throttling: Reduce the degree of parallelism. Reduce the frequency of calls. Avoid immediate retries because all requests accrue against your usage limits.