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class@FeignClient (value = "Provider-demo", configuration = Configuration.class)Note that we have modified the feign contract in this class, so what is contract? It's called a contract. Because feign first used the contract is SPRINGMVC, so we springmvc the annotations of the time the direct success, but if you start the project now you will find that has not been started. Because the contract used by Contract.default () is feign own, that is to say, we need to modify SPRINGMVC annotations to f

object to add properties and methods of the same type of object share, and add the reference type properties of the generic object to the constructor.?? The more exact name of the inheritance in JavaScript is the delegate , which implements the sharing and reuse of methods and properties through the delegation between objects, which can be done directly through the Object.create () method. An object that wants to inherit all the properties and methods of an object that owns a reference type pro

"Collection Features"1, natural to heavy, circulation2 Relationship Testing-intersection, difference set, and set, (inverse difference set, symmetric difference set)List = [1,2,3,4,5,3,6}List_2 =[2,3,5,7,8]List=set (list) #去重, go to collectionList_2 = Set (list_2)Print (List.intersection (list_2)) #交集, remove duplicate dataPrint (List.union (list_2)) # Union, de-weight-unified displayPrint (List.difference (list_2)) #差集, remove the list with List_2 noList_3 = Set ([1,3,6])Print (List_3.issubset

. Formatgrep parameter search for content file name2. Parameters(1)-C--count #计算符合样式的列数(2)-L--file-with-matches #列出文件内容符合指定的样式的文件名称.(3)-V--revert-match #显示不包含匹配文本的所有行.(4)-I--ignore-case #忽略字符大小写的差别.(5)-O # Show only keywords that match(6)-N # Display line number(7)-e #使用正则表达式Three. Regular Expressions:1. Symbolic Meaning:(1) ^: match the beginning, put in [] to indicate the inverse, such as [^0-9] represents all non-digital(2) $: Match End(3) []: Range Matching(4) [A-z]: matches all lowercase le

lock, the lock is the basis for each object, and the method of manipulating the lock is also the basis for each object.Wait () causes the current thread to wait instead of waiting for the thread class where the object is called, that is, which thread owns the lock on the object to invoke the Wait () method.Notify () wakes up a single thread waiting on the current object monitor, and if there are multiple threads waiting on this object, a random wake-up period is a thread until the current threa

instance and stitching the URL step, directly through the resttemplate to initiate the request.@RestControllerpublic class Dccontroller { @Autowired resttemplate resttemplate; @GetMapping ("/consumer") public String DC () { return Resttemplate.getforobject ("HTTP://EUREKA-CLIENT/DC", String.class);} }　　 As you can see here, in addition to removing the original and LoadBalancerClient related logic, for RestTemplate use, our first URL parameter has some specia

left boundary defaults to 0, and the right boundary defaults to the length of the Shard sequencePrint(s[1:])Print(S[0:3])Print(S[:-1])#This is also the other characters to take apart the last one, remember that it is the right openPrint(s[:])#the whole string, remember not to write is 0~len#3. Strings can be connected with a plus + +Print(S +'XYZ')#that is, the operating system written by Python can usually automatically adapt to different types of objects#4. immutability#with the final meaning

ASP. NET MVC Filter (iv) prefaceIn the previous article about the Iactionfilter method execution filter in the framework of the implementation of the process is described, this article will be iactionfilter type of filter used to do some introduction.ASP . NET MVCFilter Filters The overall object model of the filter in the system frame Iauthorizationfilter Authorization Authentication filter Execution Process Use Iauthorizationfilter

ASP. NET MVC model metadata (IV)PrefaceThe previous space explains the model metadata generation process, and does not have a detailed explanation of the internal and model metadata data structures of the model metadata generation process. After reading this article will have a clearer understanding of the model metadata, of course, it will not be particularly comprehensive, because there is space behind. Hope to bring good results for everyone.Model

ASP. NET MVC model metadata (IV)PrefaceThe previous space explains the model metadata generation process, and does not have a detailed explanation of the internal and model metadata data structures of the model metadata generation process. After reading this article will have a clearer understanding of the model metadata, of course, it will not be particularly comprehensive, because there is space behind. Hope to bring good results for everyone.ModelM

action code will be destroyed after the execution of the session will continue to save, so the verification code with TempData more appropriate. Let's take a look at the build Diagram verification code effect: 2, Sha256 encryptionAdd a static method Sha256 (string plaintext) to the common project's security class Iv. RegistrationTo add a registered view model to Ninesky.Web.Areas.Member.Models Using System.Componen

: Sets the upper limit of the cache and stores the maximum number of record objects eternal: Represents whether an object never expires Overflowtodisk: When the number of element in memory reaches Maxelementsinmemory, Ehcache will write the element to disk -Defaultcachemaxelementsinmemory= "+"Eternal= "true"Overflowtodisk= "true"/>Maxelementsinmemory set to 1,overflowtodisk set to true, as long as there is a cache element, it is stored directly to the hard disk eternal set to True, representing

when a fault-free node processes a request, if it exceeds the maximum tolerable latency, we should discard the operation and assume that the node is unavailable. Discard Strong consistency: from the previous consistency introduction can be seen, in order to ensure strong consistency, "master-slave distribution" model needs to read and write to the master node, "peer-copy" distribution model needs to be arbitrated, the more nodes involved, the greater the consistency obtained, It can be seen

1. The naming format of the domain name is: WWW. Explanation of the parsing process:· The DNS client contracted to the DNS server to request the IP address of the www.baidu.com due to a CNAME record;· The DNS client accesses the www.a.shifen.com domain name server (the equivalent of a domain name server that accesses www.baidu.com);· Here www.a.shifen.com Domain Name server is responsible for DNS query traffic balance Scheduler, responsible for the DNS request to the ns5.a.shifen.com, ns6.a.shif

User buffers: child processes created by the fork function inherit the user buffer of the parent process. If there is still data in the buffer before the parent process calls the fork function to create the child process, the child process will copy the buffer of the parent process. file sharing : child processes created by the fork function inherit all file descriptors opened by the parent process, and the same file descriptor for the parent-child process refers to the same file table entry (sh

1. Display normal stringEcho " Boring "2. Show escape charactersEcho " \ "It is a test!\" ";3. The read command reads a line from the standard input and assigns the value of each field in the input row to the shell variable#!/bin/shecho"$name It is a test"The above code is saved as test.sh,name to receive the standard input variables, the result will be:sh test. SH OK #标准输入OK It is a test #输出4. Show line breakEcho " ok! \ n " #-e turn on escape echo"it it a test"5, do

) chmod grep (keywords) Find Locate In (link) Gzip Tar Diff Patch Disk Management DF (View disk usage) Du (view current directory size occupied,-SH) Mount/unmount FDISK (partition operation on disk)The relationship of HDA,HDB,HDCThe relationship of Hda1,hda2,hda3 MKFS (File system creation) User Management passwd (User password Management) Useradd/adduser Usermod

Enterprise Linux 6 local repo #名称随便起baseurl =file:///mnt #指定rpm仓库的位置enabled=1 #1开启该配置, 0 to closegpgcheck=1 #1为校对软件[email protected] ~]# Yum install vsftpd httpd #安装vsftpd及httpd服务5. Mastering the remote Yum configuration method6. Build the Yum source server with VSFTPD:VSFTPD The default configuration file is to allow anonymous access, which can be started directly here:[email protected] ~]# Umount/dev/cdrom #卸载光盘[email protected] ~]# mount/dev/cdrom/var/ftp/pub/#挂载光盘到vsftpd的公众目录[email protecte

first letter of query, and a is the first letter of all.RPM-QA |grep DHCP-QF file name: Check which package generated the commandFor example, the command that lists the package that installs the/bin/tar file is: Rpm-qf/bin/tar-QI Package Name: Displays the information for this package, I is the first letter of the information (information)-QL: List all the files contained in this packageThird, yum management rpm package1.yum: is the abbreviation of Yellow Dog updater,modified, in order to solve

only difference is that tuples cannot be changed. The syntax for creating tuples is simple: if you split some values with commas, you automatically create tuples.>>> (1, 2, 3) >>> ( Square) # The tuple (1, 2, 3) >>> () # Empty tuple ()How do you implement a tuple that contains a value? The method is a bit peculiar----must be comma-even if there is only one value:>>> (21,) >>> (3) (20+1) 63>>> 3 * (20+1,) (21, 21,)Tuple functionThe function of the tuple function is basically the same as the li