A developer writes TypeScript code to implement an Axios interceptor for managing idempotency in HTTP requests. The tutorial covers creating a configuration interface, handling request methods, and generating unique UUIDs to ensure secure request deduplication on the client side before integrating it into the application factory.
Length 10:05
Captions English (Generated), Spanish (Auto-translated), French (Auto-translated), Korean (Auto-translated), Portuguese (Auto-translated), Vietnamese (Auto-translated) #typescript #axios #interceptor #idempotency #programming #web development #coding #uuid #backend #software engineering
0:00 All right, so now that we have the server idempotency's 0:03 interceptor created, 0:04 we're gonna create another interceptor that will work on the client 0:08 side. Now, just like we have an interceptor for the 0:11 server that can run 0:12 before and after requests 0:15 that their server receives, Axios itself also lets us 0:19 attach its idea of what it calls interceptors, which again, 0:23 are just gonna be bits of code or functions that we execute before 0:27 every request. And this is gonna be extremely useful for 0:31 idempotency because we can update it to automatically generate an 0:34 idempotency key 0:36 for idempotent methods in our application. 0:40 Additionally, this is also just a great general example 0:43 if you've never used 0:44 Axios interceptors before, which are really useful because they let you 0:48 prevent duplicating code. Instead, you can attach an interceptor to 0:52 Axios and get the functionality you want for every request out of the 0:56 box. So to do this, let's create a new 0:59 idempotency interceptor and so this will be a function that we 1:03 export, which is what Axios expects. 1:06 We'll call attachIdempotencyInterceptor 1:10 and this is gonna take in the Axios instance 1:14 itself that we're gonna be configuring as well as some 1:18 options. So here I wanna create a new type for our 1:22 idempotency options and this is what the HTTP module 1:26 consumer will actually be passing as we've been using before. 1:30 So for this, let's head back into our HTTP 1:33 types and now let's scroll down to create a new 1:37 interface, idempotencyOptions. 1:41 So here we can set an enabled flag if we want idempotency in the 1:45 application enabled. 1:47 We can also pass a custom header name. 1:49 So if we don't wanna use a default header that we're using in the server, 1:53 which remember was simply 1:55 idempotency key, we can configure that and override it 1:59 based on our needs. So we have the header name
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