Status Code 429: "Too Many Requests"
HTTP Status Code 429: "Too Many Requests"
The 429 error, "too many requests", is a client-side error.
These http status code - “too many requests” errors occur when the client is sending too many requests at once. Have you ever Googled too many things at once, and then you suddenly get asked to verify that you're not a robot by clicking on all the "street signs" or "trees" in a photo?
That hellscape you're experiencing is called "captcha". It's awful. But it usually happens when the website thinks you're using a robot to make too many requests at once.
This practice is sometimes known as “rate limiting”.
If you're a digital marketer, getting rate-limited by web services happens all the time. A number of search engine ranking tools get rate limited by Google because they make too many requests. DDoS (Distributed Denial of Service) attacks are essentially rate-limiting problems as well.
By blocking a certain IP address, or allowing a certain IP address to make a limited number of requests over a certain period of time, you are building the first line of defense in blocking DDoS attacks.
A 429 error basically says “Hey, you’re asking for stuff too frequently. Slow down please. You are blocked for a little bit, for now."
The HTTP Protocol
Let's talk about how the HTTP protocol works.
At its very foundation, the Internet is made up of two core things: clients and servers.
Any time you click on your browser, you are accessing the Internet through a web client. It may be Chrome, Firefox, Safari or Internet Explorer.
When you visit a website, you are making a request to a web server.
Facebook.com, ClickMinded.com, MarthaStewart.com/1525880/marthas-chocolate-chip-cookies, all of these sites have their own home address. It's called an IP address.
Your home address might be 123 Main Street, New York, NY 10001, and Facebook's address happens to be 66.220.144.0.
Whenever you visit a page on the web, you are requesting a whole bunch of documents from that website's server. Maybe those documents are HTML, CSS, images, a PDF—whatever it is, the basic relationship stays the same: you (the client), make a request, and the website (the server) responds to that request.
The language you are using to make these requests is called the HTTP protocol. These protocols are really just standards that everyone on the web has agreed to. Just like English, Spanish and Chinese are all languages that have an understood protocol, HTTP is just a bunch of standards and an understood protocol.
There are a number of different web protocols out there – and you might be familiar with some of them:
- DNS – Domain Name System
- FTP – File Transfer Protocol
- HTTP – Hypertext Transfer Protocol
- IRC – Internet Relay Chat Protocol
- SMTP – Simple Mail Transfer Protocol
- SSL – Secure Sockets Layer
HTTP Status Codes
Now that we understand what the HTTP protocol is, let's talk about HTTP status codes. Status codes let us know whether the HTTP request was a success, a failure, or something in between.
Let’s take a look at the five core status codes:
- 1xx block: informational requests
- 2xx block: successful requests
- 3xx block: redirects
- 4xx block: client errors
- 5xx block: server errors
Some status codes are more common than others. For example, when you're doing digital marketing, you'll often come across status code 200, status code 301 and status code 404 - but you may never see status code 206 or 307.
Let's briefly go over each status code block and what they mean.
1xx Status Codes
These are informational requests. The server hasn’t fully completed the request yet and it’s still processing the information. You will not see these codes often. They include:
- 100 – Continue
- 101 – Switching protocol
- 103 – Checkpoints
2xx Status Codes
These are successful requests, which means everything is okay. They include:
- 200 – OK (you will see this one the most)
- 201 – Created
- 202 – Accepted
- 205 – Reset Content
- 206 – Partial Content
3xx Status Codes
These are redirects. These are shown when you request an address, but you are sent somewhere else. These can be good or bad. They include:
- 301 – Moved Permanently
- 302 – Found
- 304 – Not Modified
- 305 – Use Proxy
- 307 – Temporary Redirect
4xx Status Codes
These are client errors. That means something went wrong with the request (client/user) and not the response (website/server). They include:
- 400 – Bad Request
- 401 – Unauthorized
- 403 – Forbidden
- 404 – Not Found
- 408 – Request Timeout
- 410 – Gone
- 429 – Too Many Requests
5xx Status Codes
These are server errors. That means something went wrong with the response (website/server) and not the request (client/user). They include:
- 500 – Internal Server Error
- 502 – Bad Gateway
- 503 – Service Unavailable
- 504 – Gateway Timeout
In Conclusion
Looking for more on a particular status code? We have a series of short guides on every HTTP response, so you can optimize your digital marketing strategy. Grab them here:
- The Complete Status Code Guide
- Status Code 200, Status Code 301, Status Code 302, Status Code 304
- Status Code 401, Status Code 403, Status Code 404, Status Code 410
- Status Code 429, Status Code 500, Status Code 503, Status Code 504
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