A developer writes TypeScript code to implement a circuit breaker factory for Axios requests using the Opossum library. The process includes defining configurable options like timeouts, error thresholds, and reset windows, while ensuring type safety for HTTP interactions.
Length 10:44
Captions English (Generated), Spanish (Auto-translated), French (Auto-translated), Korean (Auto-translated), Portuguese (Auto-translated), Vietnamese (Auto-translated) #typescript #circuit-breaker #axios #opossum #software-engineering #http-factory #coding #programming #development
0:00 All right, so our first step is to make sure we actually install the 0:03 Opossum 0:03 libraries so that we have that available for use. 0:07 And now we're gonna head back into our application code. 0:10 Now, inside of HTTP, just like we did for Axios 0:14 factory, we're actually gonna create a new factory 0:18 for a 0:18 circuit breaker which defines how to actually create one. 0:22 Given an Axios instance, we can actually take the circuit 0:26 breaker and wire our direct usage of 0:29 Axios through it so that we catch any failures 0:33 coming back from Axios to our upstream services and apply that 0:37 circuit breaker pattern. So for this, I'm gonna go ahead and create a new 0:41 circuitbreaker.factory.ts, and 0:45 let's go ahead and export function 0:47 createHttpCircuitBreaker, 0:52 which will be our factory function here. 0:55 And so this is gonna take two arguments. 0:56 The first one will be the underlying Axios instance that we're gonna pass 1:00 in from our Axios factory later on. 1:04 And again, this is so that we can actually intercept the 1:07 requests going out through 1:08 the circuit breaker. 1:10 And then we're gonna have options that we can configure on the circuit 1:14 breaker. So let's go ahead and set these up next. 1:18 All right, so now we wanna define the type of the 1:21 options that 1:22 we're going to accept for the circuit breaker configuration. 1:26 And again, just like we've been doing for the rest of 1:28 our resilient 1:29 HTTP functionality, 1:32 we're gonna make this fully configurable so that we can tune it depending 1:36 on the application 1:38 and its particular needs, making our solution highly 1:41 flexible and usable in a variety of different apps. 1:45 And so let's head back into our http.types 1:48 file where we can define our circuit breaker options. 1:53 So let's go ahead and export a new interface, 1:57 CircuitBreakerOptions. Now, a lot of these
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