design container

/zhangyihui1986/article/details/8793626 Beandefinition Loading This loading process represents the defined bean as the data structure beandefinition inside the container. This beandefinition is actually the abstraction of pojo objects in the IOC container. Through the data structure defined by beandefinition, the IOC container can conveniently manage pojo objects

response,Handlerexecutionchain mappedhandler, modelandview mv, Exception Exception)1212Returns the page and the returned data to the browser to complete the entire request Process. The above is SPRINGMVC about the START process and request processing process, after this blog will continue to analyze the core of spring source, Bo Master has always thought that the famous framework of intensive reading is the shortest time to improve the code capabilities of the shortcut, because these wheels con

; } Public function Get ($name) { return $this->service_arr[$name]; } }Then we will use some service later, we can directly through the Container->get (' some ') way to get the example Class SomeClass { Priavte $container; Public function construct ($con) { $this->container = $con; } Public Function Dbtask () { $db = $this->

The essence of swarm and k8s are container orchestration services.They can abstract the underlying host, and then start the application from a built-in image and eventually deploy it to a host on a docker basis. Which scenario should be chosen as our container cloud service? I think k8s (kubernetes short) and swarm compared to MySQL and SQL Server comparison, the former lightweight, implementation fast, in

CopyOnWriteArrayList concurrent container,CopyOnWriteArrayList concurrent container Copy-On-Write (COW) is an optimization strategy used in program design. The basic idea is that from the very beginning everyone is sharing the same content. When someone wants to modify this content, they will actually Copy the content to form a new content and then modify it, thi

number of pod copies (replicas), The Replication controller initiates a new container, which in turn kills the excess to ensure that the quantity is constant. Replication Controller uses a pre-defined pod template to create the pods, and once created, the pod template is not associated with the pods created, and you can modify the pod template without any effect on the created pods. You can also update the pods created by replication controller direc

IoC container summary and simple Simulation When a component requires external resources, the most direct and wise way is to perform a search. This behavior is called active search. However, this kind of search has a disadvantage: components need to know how to obtain resources. A good solution for obtaining resources is to apply IoC (Inversion of Control, Control reversal ). Its idea is to reverse the direction of resource acquisition. The traditiona

see that each time the Getbean method is invoked, the bean instance (including the dependency generated) will be beanpostprocessor fetched for both the predecessor and the post processing. In addition to processing the assembled beans in a way that resembles the beanpostprocessor above, spring can also configure Init-method and Destroy-method to set the callback function for the bean initialization and destruction process. These callback functions also provide the flexibility to give the oppor

abbreviations for virtual machines, and these are masterpiece.Container-maintainabilityLinux container, the usual style of Linux, slowly evolve, do not seek careful design, and then is Cgroup, Pid/uts/ipc/net/uid namespace a realization out, to gather a container technology, seemingly UID namespace Or the feature that just came out recently. User space is more t

it. Of course, if you have a bad design, it's inevitable to meet these problems. In this example, the service locator is a simple data container that can be easily modified to create a service for testing. For more complex situations I can derive subclasses from the service locator and pass subclasses to the registry class variables. In addition, I can let the service locator expose a static method instead

Copy-on-write abbreviation Cow, is a kind of optimization strategy used in program design. The basic idea is that from the beginning everyone is sharing the same content, when someone wants to modify the content, it will really copy the content to form a new content and then change, this is a delay lazy strategy. Starting with JDK1.5 Java Concurrency Package provides two concurrent containers implemented using the Copyonwrite mechanism, which are copy

precisely because of the complexity of unity/objectbuild, many people write about Unity/objectbuild, often in order to cover up, leading to a lot of readers unintelligible. The end result is that the reader who understands Unity/objectbuild is able to read or not understand. In this article, I try a different approach: seize the essence of unity/objectbuild, remove some of the minutiae, and hope to make the reader understand the essence of unity in a new perspective.First, from the pipeline + c

runs a special called volume mounted volume, so communication and data exchange between them is more efficient, and at design time we can take advantage of this feature to put a set of closely related service processes into the same pod.The containers in the same pod can communicate with each other only via localhost. The app container in one pod shares five resources:PID namespaces: Different applications

virtual resources. Originally the bottom is the virtual machine when, feel good complex, what sr-iov,libvirt/kvm,sdn,overlay,ceph ... People who do PaaS generally don't understand. And now there is a stack of ready-made Docker container platform, and then to the application, are doing software people can do things, so in fact, the IaaS is not so critical.These discussions, like the one-core and micro-kernel battles of the year, are not only related t

In object-oriented system, the object encapsulates the data and the processing of the data, the dependency of the object is often embodied in the dependence on the data and the method. These dependencies can be done by giving the object's dependency injection to the framework or IOC container, which is very valuable to hand over the control from the specific object, which can improve the testability of the code while decoupling the code.In spring, the

Copy-on-write abbreviation Cow, is a kind of optimization strategy used in program design. The basic idea is that from the beginning everyone is sharing the same content, when someone wants to modify the content, it will really copy the content to form a new content and then change, this is a delay lazy strategy. Starting with JDK1.5 Java Concurrency Package provides two concurrent containers implemented using the Copyonwrite mechanism, which are copy