micro-service | : gem : Spring Cloud demo based on Camden.SR5 | Microservice library
kandi X-RAY | micro-service Summary
kandi X-RAY | micro-service Summary
工程名 描述 端口 eureka-server 服务发现与注册中心 7070 ribbon 负载均衡器 7071 config-server 配置管理中心 7072 zuul 动态路由器 7073 service-A A服务,用来测试服务间调用与路由 7074 service-B B服务,整合Mybatis、PageHelper、Redis,整合接口限速方案,可选google Guava RateLimiter与自实现 7075 service-B2 B2服务,与B服务serviceId相同,用来测试负载均衡和容错 7076 hystrix-ribbon 负载均衡器的容错测试 7077 feign 声明式、模板化的HTTP客户端,可用来做负载均衡,较轻量 7078 hystrix-feign feign的容错测试 7079 hystrix-dashboard hystrix可视化监控台 7080 turbine 集群下hystrix可视化监控台 7081 sleuth 服务链路追踪 7082 service-admin spring boot admin监控台 7088 . 1、最先启动的是eureka-server,并且你需要在整个测试过程中保持它的启动状态,因为它是注册中心,大多数服务必须依赖于它才能实现必要的功能。 2、如果你想测试配置中心,可以先启动config-server,再启动service-A,按照规则来获取config-server的配置信息。 3、如果你想测试负载均衡,则需启动ribbon、service-B、service-B2工程,在ribbon中配置自己需要的负载均衡策略,配置方法见: 4、如果你想测试路由,则需启动zuul工程,另外需保证service-B、service-B2、service-A其中一个或者多个工程处于启动状态,按照zuul工程的配置文件来进行相应的操作。 5、如果你想查看spring boot admin监控台,则需启动service-admin、service-B工程,注意,spring boot admin工程需至少运行于JDK8环境。 6、如果你想测试熔断功能,则需启动hystrix-ribbon与ribbon或者feign与hystrix-feign工程。 7、如果你想查看断路器的监控台,请启动hystrix-dashboard(单机)和turbine(集群)工程,使用方法代码注释有写。 8、如果你想知道服务之间的调用情况,启动sleuth、service-B2、service-A。 .
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Top functions reviewed by kandi - BETA
- Add to Redis
- generate new token
- The DruidDataSource bean .
- Runs the access token
- set shutdown hook .
- Create SqlSessionFactory bean .
- The reminder .
- Creates the OredCriteria object .
- The rest template bean .
- Creates the access filter .
micro-service Key Features
micro-service Examples and Code Snippets
Community Discussions
Trending Discussions on micro-service
QUESTION
I am working on a backend composed of multiple microservices, and I want to be able to view the spans in the Jaeger UI. I use docker-compose
to run my containers, including jaeger, and opentelemetry to generate and send spans. I have followed the troubleshooting guide up to and including the logging reporter.
This is my first time working with jaeger and this kind of architecture so I feel a bit lost at this point.
Here are some relevant parts of my code, some logs and screenshots :
Docker-compose.yaml ...ANSWER
Answered 2022-Mar-23 at 20:07You have to think of a container as an individual minimal host. And in that case, when you say to your ticket_service
app to call localhost
it will call itself, which is not what we want.
Whenever using docker-compose, a docker network is created and the containers are configured to use it.
You can use that network to make your containers communicate with each other by their names.
In your case, as the Jaeger container is called jaeger
, you have to configure the endpoint of your JaegerExporter as follows:
QUESTION
I'm trying to setup a dotnet micro-service backend with a gateway using Ocelote. Doing this as described, Ocelote provides me with multiple swagger definitions (for each micro-service)
Since the API now has multiple definition, each definition has its own defining json file.
How can i generate the API services and Models using openapi-generator-cli in this case. Previously i only had one definition which i generated with the command below, passing it the published json file directly
...ANSWER
Answered 2022-Feb-19 at 16:30Since there was no fitting tool for my problem or an answer for 6 months, i decided to write an open source tool myself. It is still a WIP but it may already be enough for you, just like it is for my current needs.
Basically what it does is detecting the swagger definitions, generating each of those using the openapi-cli-generator
and then merging all generated files together. At the end there are no duplicate files and a single Configuration.
If you find any bugs or unhandled edge cases please contribute via Github!
QUESTION
I've got an edge service which consolidates results from 3 different micro-services.
- Returns a Flux of customers
- Returns Mono of profile for customer
- Returns a Flux of roles for customer
What is the correct way to build a Flux of CustomerProfile objects which will include information about customer, profile and roles?
...ANSWER
Answered 2022-Feb-12 at 13:55So, like I said above, your syntax error is easy to fix, but your question demands an explanation of reactive practices.
Remember, reactive is about "non blocking" during I/O operations. Every time you call one of your dependent services you are "blocking". Calls to getRolesFor
and getProfileFor
are blocking when they do database lookups. Therefore they return reactive responses as Mono
or Flux
. This is not to say they don't block, they do, but the WebFlux/Reactive framework allows the server to do work on other requests on the same thread. In the traditional model the server would have to create new threads for other requests while the current requests thread is blocked waiting on dependent services.
In your request you can pass the customerId to both getRolesFor
and getProfileFor
so you want to make both service calls at the same time and combine the results.
QUESTION
This should be fairly easy, or I might doing something wrong, but after a while digging into it I couldn't find a solution.
I have a Terraform configuration that contains a Kubernetes Secret resource which data comes from Vault. The resource configuration looks like this:
...ANSWER
Answered 2022-Jan-17 at 11:51You need to add in the Terraform Lifecycle ignore changes meta argument to your code. For data with API token values but also annotations for some reason Terraform seems to assume that, that data changes every time a plan or apply or even destroy has been run. I had a similar issue with Azure KeyVault.
Here is the code with the lifecycle ignore changes meta argument included:
QUESTION
I'm running into status code 413 Request Entity Too Large. I'm running an Amazon Linux 2 AMI instance on AWS's Elastic Beanstalk, which is running an express server with a post route that uploads files to an S3 Bucket and then both adds some data to a table and produces a kafka message. Everything is working properly with files below 1MB size.
I understand nginx's default max-size value is 1MB and that I must change it.
I tried every answer in this thread Increasing client_max_body_size in Nginx conf on AWS Elastic Beanstalk but despite getting the client_max_body_size 10M; inside the nginx.conf file, and restarting nginx everytime I changed a configuration, using nginx -t to see if anything was wrong with the syntax, resulting in everything being ok, and finally proving via this command that the client_max_body_size 10M; line was in fact there, when it accused of there being a duplicate of it inside the file, all of these configs seemed to be completely ignored by my micro-service whenever I try to post a file greater than 1MB.
i added client_max_body_size 10M; manually to show that, when testing, nginx tells me it's duplicate, proving it was already included in the nginx.conf file
I also tried to put my conf files inside a .platform/conf.d/
structure, which did make the client_max_body_size 10M; go inside the nginx.conf file, but still it made no difference for my request.
I've also tried reload and restarting the nginx service, both to no avail.
I don't have much ideas on where to proceed from here. Any tips?
...ANSWER
Answered 2021-Dec-22 at 03:12The link you are giving is for Amazon Linux 1 (AL1). These days all EB platform are based on AL2, and nginx is set differently. Namely, you should create .platform/nginx/conf.d/myconfig.conf
file in the root of your application, with the content of:
QUESTION
I'm working on a SpringBootApplication. In this app I have 4 micro-services using Feign to communicate between eachothers. In a Controller I have a piece of code like this below, to catch exceptions and return it to the view, in case something is wrong.
...ANSWER
Answered 2021-Dec-16 at 17:01You can get the status by calling e.status()
and then you can switch
-case
the status and get a message based on that. You could also build a Map
of and get the message by status. To read about FeignException more kindly visit https://github.com/OpenFeign/feign/blob/master/core/src/main/java/feign/FeignException.java
And it is strongly advisable to be specific about what you catch
:
QUESTION
To define a VPC Link into API Gateway we have to declare an NLB in eks (LoadBalancer service) to access the pod in the VPC.
When we define ingress resource, we can group them into one ALB with the annotation alb.ingress.kubernetes.io/group.name
It seems not possible to do the same with multiple service as a network load balancer. Is it possible ? Or just a bad idea to expose multiple micro-service (with different endpoint) on the same NLB with port as discriminant ?
...ANSWER
Answered 2021-Oct-13 at 17:22Quick answer: Not possible as of today
AWS LB ingress controller supports ALB and NLB, but keep in mind that the ALB ingress controller:
- watches the
Ingress
objects withalb.ingress.kubernetes.io/*
annotations for ALB - also watches
Service
objects withservice.beta.kubernetes.io/*
annotations for NLB
As of I am writing this, there are no annotations under service.beta.kubernetes.io/* that implements want you need.
QUESTION
In our organisation, we have a software system, powered by multiple microservices namely :-
- Aggregator MS.
- Customer MS.
- Document MS.
Each of the aforesaid micro-service have a master
branch, which has latest codebase.
Now, there are multiple verticals which are actively developing & contributing to aforesaid microservices. Some of the verticals(independent group of developers) are for example :-
- Vertical-A
- Vertical-B
- Vertical-C
There are pre-defined strategies for each vertical (into which they do their development) and some common code as well, in the above microservices.
Also, each vertical have Infrastructure level segregation, which means there are 3 independent cluster-setups for each vertical.
Post their respective deployment, each vertical merges their code to the respective master
branches. Now, if another vertical has to do their development, they have to rebase their feature/local branch with master and then proceed.
Now the Problem is :-
Whenever Say Vertical-A introduces some change in any of three microservices, they need to take the signoff from remaining verticals i.e. Vertical-B & Vertical-C. In another sense, we have a huge inter-dependence of one vertical on other verticals.
I shall be thankful to the community here, if you can suggest some ways of de-coupling the code here.
Any pointers or references would be highly appreciated & welcome.
-- Thanks aditya
...ANSWER
Answered 2021-Oct-11 at 03:59You have a classical dependency management problem. In order to manage that correctly you will have to version each MS and treat them like external dependencies, meaning you may have to communicate changes early and provide old versions in parallel to new versions until all verticals have upgraded.
This is the exact reason that microservices should follow the organizational structure or in the best case the organizational structure is changed to reflect the functional responsibilities of the services.
In your case it sounds like it would be best if you can convince your management to create new teams that are responsible for a core service each (aggregator,document, etc.). That way the responsibilities and communication paths are clearly defined. The vertical teams will have to provide a feature request to the core service team and the core team will aggregate the requests from all verticals and announce and manage new version development and roll outs, etc. This is how google and other large companies work internally btw.
For more background information I recommend to read the articles by Martin Fowler.
QUESTION
I have installed cert manager on a k8s cluster:
...ANSWER
Answered 2021-Sep-21 at 13:30Based on logs and details from certificate you provided it's safe to say it's working as expected.
Pay attention to revision: 5
in your certificate, which means that certificate has been renewed 4 times already. If you try to look there now, this will be 6 or 7 because certificate is updated every 12 hours.
First thing which can be really confusing is error messages
in cert-manager
pod. This is mostly noisy messages which are not really helpful by itself.
See about it here Github issue comment and here github issue 3667.
In case logs are really needed, verbosity level
should be increased by setting args
to --v=5
in the cert-manager
deployment. To edit a deployment run following command:
QUESTION
I am trying to migrate our cassandra tables to use liquibase
. Basically the idea is trivial, have a pre-install
and pre-upgrade
job that will run some liquibase
scripts and will manage our database upgrade.
For that purpose I have created a custom docker image that will have the actual liquibase cli
and then I can invoke it from the job. For example:
ANSWER
Answered 2021-Sep-20 at 21:05It turns out that helm
hooks can be used for other things, not only jobs. As such, I can mount this file into a ConfigMap
before the Job even starts (the file I care about resides in resources/databaseChangelog.json
):
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install micro-service
You can use micro-service like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the micro-service component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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