Spring Cloud (i): Service Governance Technology Overview "version Finchley" Posted in 2018-04-14 | updated on 2018-05-07 | Spring Cloud Netflix is a framework in spring cloud that was developed by Netflix and later incorporated into the spring Cloud family, and its main modules include service discovery, circuit breakers and monitoring, intelligent routing, client load balancing, and more.Starting with
specifying their specific classes. Abstract Factory mode, also known as the kit mode, belongs to the object creation mode.
This pattern is a further extension of the factory method pattern. In the factory method model, a specific factory is responsible for producing a specific type of product, i.e. one-to-one relationships, but if a specific plant is needed to produce multiple product objects, then an abstract factory model is needed.
To facilitate understanding of this pattern, here are two co
Springcloud distributed development of the five great Gods and beasts
Service Discovery--netflix Eureka
Customer-side Load Balancing--netflix Ribbon
Circuit Breaker--netflix Hystrix
Service Gateway--netflix Zuul
Distributed configuration--spring Cloud Config
EurekaA restful service that lo
OPENCV provides us with a number of methods and procedures for training classifiers. For human face detection classifier training is called Haier training, we can use these methods to create our own classifier.
(i) Data preparation: Positive sample (Human face)We need to collect images that contain only faces. The UMIST face Database has a video-like continuous face image, whether it's a positive or a side face. I thought training these images would p
Introduction to Spring Cloud ribbonribbonFor load balancing, and for soft load balancing, the core has three points:
Service discovery, discovering a list of dependent services
Service selection rules, how to select a valid service in multiple services
Service monitoring, detection of failed services, efficient elimination of failure services
Netflix RibbonA simple DemoConfiguration file:# Max Number of retries on the same server
Springcloud distributed development of the five great Gods and beasts
Service Discovery--netflix Eureka
Customer-side load Balancing--netflix Ribbon
Circuit Breaker--netflix Hystrix
Service Gateway--netflix Zuul
Distributed Configuration--spring Cloud Config
EurekaA restful service that lo
Definition: Provides an interface that creates a series of related or interdependent objects without specifying their specific class.ConceptTo understand the abstract factory model, first understand a few concepts, one is the product hierarchy, the other is the product family.The factory hierarchy is introduced in the factory method mode , which solves the problem that the factory class responsibilities are too heavy in the simple Factory mode, but because there is only one or a set of overloade
2. product level structure and product family
In the factory method mode, a specific factory is responsible for producing specific products. Each factory corresponds to a specific product. The factory method is unique. Generally, A specific factory has only one or more heavy-duty factory methods. But sometimes we want a factory to provide multiple product objects, rather than a single product object. For example, an electrical appliance factory can produce televisions, refrigerators, air conditi
. Its sub-classes include Haier TV, Hisense TV, and tcl TV, the abstract TV set and the TV set of a specific brand constitute a product level structure. The abstract TV set is the parent class, and the TV set of a specific brand is its sub-class. (2) product family. In the abstract factory model, a product family is a group of products produced by the same factory in different product levels. For example, Haier
One, Haier Hello WiFi router installation
Hello WiFi Router installation and connection is the same as the common router installation connection, if it is a cat with dial-up Internet, you need to connect the external network cable to the cat, and then the cat and the Hello WiFi router Wan port connection, and finally the router LAN port connected to the computer, Finally connect the cat and the router power supply, you can complete the installation,
describes specific cases of high-price vacancies, low-price vacancies, and Gender vacancies.
Get a good name
"A brand name is just as important as its positioning, maybe more important than positioning ."
To build a brand through positioning strategy, the first step is to get a good name. The name is the first touchpoint between information and mind. A good name is the best guarantee for long-term success. In chapter 1 of this book, the power of name has made a lot of discussions on "How to get
. Even if there is a deviation, the reason is well understood. For example, the cost of a standard iPad with Wi-Fi is USD 499/599/699, and the storage capacity is 16/32/64 GB. If you want an iPad with a built-in 3G function, you need to add $130 to the standard iPad price and provide two simple traffic packages: $15 per month, M data traffic is allowed; or 25 USD per month, 2 GB Data traffic is allowed. Easy to select, easy to cancel, no hidden fees, only a few prompts will appear before your da
@ RibbonClients. if you use @ ComponentScan (or @ SpringBootApplication) you need to take steps to avoid it being stored ded (for instance put it in a separate, non-overlapping package, or specify the packages to scan explicitly in the @ ComponentScan ).
WarningFooConfiguration must have @ Configuration, but note that it is not in the @ ComponentScan of the main application context. Otherwise, it will be shared by all @ RibbonClients (that is, the default value of all clients is overwritten ).
the product class being instantiated, which allows the factory method pattern to allow the system to introduce new products without modifying the factory role.
3. Abstract Factory mode
Provides an interface to create a series of related or interdependent objects without specifying their specific classes. Abstract Factory mode, also known as the kit mode, belongs to the object creation mode.
This pattern is a further extension of the factory method pattern. In the factory method model, a specifi
: Abstract Factory
Concretefactory: Specific Factory
Abstractproduct: Abstract Products
Product: Specific Products
In order to understand the factory method pattern more clearly, two concepts need to be introduced first:
Product Hierarchy Structure: Product hierarchy structure is the product's inheritance structure, such as an abstract class is a television, its sub-category has Haier TV, Hisense TV, TCL TV, the abstract TV and the
+" era of new product features and experience. Refrigerator partition Storage trend, drive new standards introduced In the golden age of manufacturing technology development, the function of refrigerators has been limited to "storage" and "fresh" two areas, at this stage, refrigerators products only provide such basic functions to meet consumers and markets. Later, with the development of information technology, more and more multi-functional, personalized refrigerators increasingly into the
structure: Product level structure refers to the inheritance structure of products. for example, an abstract class is a TV set. its sub-classes include Haier TV sets, Hisense TV sets, and tcl TV sets, abstract TV sets and TV sets of a specific brand constitute a product level structure. abstract TV sets are the parent class, while TV sets of a specific brand are the child classes.
Product Family:In the abstract factory model, a product family refers
1. Mode motivationIn the factory method model the specific factory is responsible for the production of specific products, each specific plant corresponds to a specific product, the factory method is also unique, in general, a specific factory only one factory method or a set of overloaded factory methods. But sometimes we need a factory that can provide multiple product objects, rather than a single Product object.In order to understand the factory method pattern more clearly, two concepts need
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