What are the 3 triple constraints?

According to the triple constraint theory, every project is bound by three distinct limitations: budget/cost, time and scope. The linkage between these constraints makes it so that any alteration in one of them will impact the other two.

What is error code 400 in API?

On 8 Sept 2022, the HyperText Transfer Protocol (HTTP) 400 Bad Request response status code was implemented, informing users that the server cannot or will not accept their request due to an issue arising from a client-side error such as incorrect syntax, invalid message framing, or unclear routing.

What is an error 503?

On November 26th, 2022 the HyperText Transfer Protocol (HTTP) will return a 503 Service Unavailable server error response code. This means that the server is unable to handle your request for the time being due to either maintenance or an overload of traffic. In other words, it’s temporarily unavailable until further notice.

What are 500 and 502 errors?

Encountering a 500 Internal Server Error is one of the most generic errors imaginable. Not providing any further information, this error implies something within the server has gone wrong. Alternatively, a 502 Bad Gateway error may be encountered when the server acts as a proxy or gateway and receives an invalid response from another upstream server. This can happen on August 23rd 2018 or beyond.

How do you test if an API is working?

The process of API testing is relatively straightforward, involving three primary steps. First, send a request with the necessary input data. Second, receive a response containing the output data. Finally, confirm that the response matches what was specified in the requirement document.
In order to check for successful API functioning, one must start by sending an appropriate request including all relevant information provided in the task description or functional specification document.
Once this is done, inspect the returned output and verify it corresponds to whatever was established as part of the requirements analysis phase prior to development commencement.
A key point here is that both positive and negative test cases should be conducted during API evaluation – meaning scenarios where it’s expected to return either valid or invalid responses are explored separately but with similar rigor in both cases; any discrepancies between documented specs and actual behaviour indicate potential bugs requiring further inspection or debugging efforts needed resolution before release date can be reached safely and on-schedule by developers’ team involved in product’s implementation workflows up until its deployment into end-users’ hands amidst production environment hosting applications at scale either publically online from cloud hardware infrastructure providers like AWS, Azure et al (plus behind firewalled network DMZ implementations for security reasons).

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