How can I change spring boot default web server?
And for complicated business and big transactions which one has the best performance?
I need a KPI for spring boot web server assessment.
for how to change embedded web server, checkout the official 'how-to' guide:
Embedded Web Servers.
for performance assessment, checkout this sharing. SpringBoot — performance testing various Embedded Web Servers.
Related
I am working on the web service project by Spring Boot, services exist in a jar,
My question is how to consume these services?
Any help is very appreciated.
(according to your tags, you've developed REST services.)
Postman is a great tool (great GUI with many functionalities) to test your REST services.
It's available as Chrome Extension or as stand alone app.
I have one monolith spring web application developed using spring 3.1 and spring-security 3.1 with Java 7 and it is deployed on tomcat 7.
Now I have a new requirement where I have to create a micro-service for a new module using spring boot with java 8. This micro-service will be deployed separately on different EC2 instance.
I am looking for suggestion/idea to access new microservice from my existing spring web application.
How to perform inter process communication within these two spring application?
Can someone provide me any help/pointer?
You can make use of service discovery pattern, which are mainly of two kinds -
Client-side discovery - This is where clients are responsible for figuring out available service instances. Example - Netflix OSS.
Server-side discovery - In this the service instances are registered on the server-side using a service registry. Example - AWS ELB.
You can read a lot about these on the internet. Just remember the keywords.
Hope this helps !
Bit confused with Spring framework and what capabilities application server provides.
I was reading this answer on same site
There he says,
Additionally App Server have components and features to support
Application level services such as Connection Pooling, Object Pooling,
Transaction Support, Messaging services etc.
That means we can optionally use apis of application server to manage transaction in our web application (inject web application :()and I think spring also provides transaction apis. So whats the difference?
Please, help me to make it clear. Thanks you.
When you use app server resources (transactions, connection pools etc.) directly in your application code, you can only run it when it is deployed on an application server or even worse only on that syme type of application server.
Spring allows you to use those resources and configure your application for different environments. The application can be run on any application server or on a simple Tomcat, or on different servers in the cloud.
Spring also allows you to run your code in tests (unit tests) without the need to start up an application server. This is absolutely needed to write automated tests.
Everything that can be done with an application server, can be done with spring as well.
There is a whole world of spring libraries and framework that provide features that are not available directly on application servers.
I can really recomand to give spring a try.....
Everything I found on the internet about Spring Cloud Netflix is about running microservices from Boot applications using #EnableEurekaClients and so on.
Now I'm trying to connect my logging microservice within a traditional war application (springmvc, jaxws etc) - piece of legacy which can not be converted to Boot or modified in any way (by technical task).
I've created a new maven module "log-server-client" that knows nothing about upper web layer and intended to be used as a simple dependency in any maven project.
How should I configure access to Spring Cloud Netflix for this simple dependency? At least, how to configure Eureka and Ribbon?
I just extracted some lines of code from RestTemplate and created my custom JmsTemplate (microservice works with jms remoting with apache camel and activemq), exactly how it is done in RestTemplate, but this code stil lacks connection to infrastructure
afaik, we can create a global singleton bean, run a separate thread from this bean, and run Boot app from this thread, but don't you think that it is very ugly and can lead to problems? How it really should be used?
Great question!
One approach is to use a "sidecar". This seems to be a companion Spring Boot application that registers with the Eureka Server on behalf of your traditional web app.
See e.g.:
http://www.java-allandsundry.com/2015/09/spring-cloud-sidecar.html
http://cloud.spring.io/spring-cloud-netflix/spring-cloud-netflix.html#_polyglot_support_with_sidecar
Another approach is to use the following library:
"A small lib to allow registration of legacy applications in Eureka service discovery."
https://github.com/sawano/eureka-legacy-registrar
This library can be used outside of Spring Boot.
I'm in the process of converting a Tomcat deployed web app to a Spring Boot packaged web UI. The original Tomcat WAR used Spring Security to secure URL's exposed by the web app. Within a short while I will be developing a second web app that will be deployed as a second discrete Spring Boot app.
Before using Spring Boot I would probably have encapsulated both web apps into a single WAR file using Spring Security to secure the URL's of both.
However, given that that there are now two distinct JAR's deployed onto two distinct servers, how do I apply a common Spring Security model? If a user is authenticated on web app #1 then I want that authenticated state to be recognized by web app #2, to avoid the user having to login again.
To reduce inter dependence should I configure each Spring Boot app to employ the same underlying Spring Security configuration? Or is there a different appraoch required?
An excellent article for your problem at https://spring.io/guides/tutorials/spring-security-and-angular-js/
You have to use #EnableRedisHttpSession and #EnableZuulProxy annotations.