Zuul takes 5-6 seconds to route request via URL

[ghost]

Hi,

I have a two Spring Boot application running (A & B) on one server, and the Zuul API Gateway (Spring) running on a another server (under the same network).

Application A will make a request to the gateway, and gateway will route the request to application B and return the results back. Everything is working correctly, just that zuul takes 5-6 seconds just to route the request. However, subsequent requests will be very fast (for around 15 seconds).

If it's hard to understand: Request 1: (Time = 1:00:00) Time taken: 5 seconds Request 2: (Time = 1:00:05) Time taken: 0.2 seconds Request 3: (Time = 1:00:08) Time taken: 0.2 seconds Request 4: (Time = 1:00:10) Time taken: 0.2 seconds Request 5: (Time = 1:00:15) Time taken: 5 seconds and so on...

I have enabled debug logging on my gateway, and found that this is the part where it takes 5 seconds in zuul:

2019-01-31 11:48:19 [[ACTIVE] ExecuteThread: '3' for queue: 'weblogic.kernel.Def ault (self-tuning)'] DEBUG org.apache.http.wire.wire -line no:[87]- http-outgoi ng-0 >> "{"param":"Y"}"

2019-01-31 11:48:25 [[ACTIVE] ExecuteThread: '3' for queue: 'weblogic.kernel.Def ault (self-tuning)'] DEBUG org.apache.http.wire.wire -line no:[73]- http-outgoi ng-0 << "HTTP/1.1 200 OK[\r][\n]"

So, I'm suspecting after the initial connection, zuul keeps the connection alive (for only 15 seconds), therefore I have to 'reconnect' after this time? Is there a way I can configure this? I've been playing around with many different zuul properties to no avail.

My application properties: zuul.routes.app.url= server.servlet.contextPath=/api

ribbon.eureka.enabled=false ribbon.listOfServers= ribbon.ServerListRefreshInterval=10000

ribbon.eager-load.enabled=true ribbon.eager-load.clients=app hystrix.command.default.execution.timeout.enabled= false ribbon.ConnectTimeout = 100000 ribbon.ReadTimeout = 100000

zuul.routes.auth.stripPrefix=false server.use-forward-headers=true management.security.enabled=true zuul.sensitive-headers= zuul.add-host-header=true

logging.level.com.netflix.loadbalancer.LoadBalancerContext=DEBUG

zuul.host.connect-timeout-millis=50000 zuul.host.socket-timeout-millis=50000

[spencergibb]

What versions of boot and spring cloud are you using?

Can you provide a complete, minimal, verifiable sample that reproduces the problem? It should be available as a GitHub (or similar) project or attached to this issue as a zip file.

[ghost]

I'm using 2.0.3 Spring Boot and 2.0.2 Spring Cloud.

I'm unable to provide a sample due to confidential codes, but there's nothing much in the code. I've removed all the filters from my gateway for testing, so the gateway is just a basic Spring Boot app with @EnableZuulProxy.

My Application A uses:

HttpPost post = new HttpPost(postUrl);

StringEntity postingString = new StringEntity(mapper.writeValueAsString(param));
post.setEntity(postingString);
post.setHeader("Content-type", "application/json");
post.setHeader("Authentication", "Bearer:" + authToken);

HttpResponse  response = httpClient.execute(post);

It reaches the Gateway API immediately, and the delay occurs when monitoring the gateway debug logs.

[spencergibb]

My samples with zuul don't suffer like that. I don't want any confidential code, just a minimal sample that recreates the issue. Without it, I'll be unable to help.

[spring-projects-issues]

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[spring-projects-issues]

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