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task runing 0现在时间：09:44:17thisis scheduler task runing 1现在时间：09:44:23thisis scheduler task runing 2现在时间：09:44:29thisis scheduler task runing 3现在时间：09:44:35Parameter description@Scheduled parameter can accept two kinds of timing settings, one is our common cron= "*/6 * * * *?", one is fixedrate = 6000, both of which represent every six seconds to print the content.fixedrate Description @Scheduled (fixedrate = 6000): Executes 6 seconds after the last execution point; @Scheduled (Fixe

to be a bridge between runnable and activity interactions, so we just send a message in the Run method, and in handler, we perform different tasks with different messages. PackageCom.android.tutor; ImportJava.util.Timer; ImportJava.util.TimerTask; Importandroid.app.Activity; ImportAndroid.os.Bundle; ImportAndroid.os.Handler; ImportAndroid.os.Message; Public classHandlerdemoextendsActivity {//The title provides a variable for the Settitle method, which I set as the int type for convenience.

(LISTlist) { } //compiled by Public voidTest (LISTlist) { }Summarize:ArraylistArraylistarraylistLimitations of generics:? Extends e: Receives subtype of e type or E.？ Super E: Receives the type E or the parent of E.Vii. in the generic typeUse To add multiple qualifiers to a generic type　 Public classa{} Publicinerface b{}//whether the qualification is a class or an interface, unification uses the keyword extends//multiple qualifiers can

could also fail, but let's try */fprintf (stderr, "failed to allocate memory for con Nection object\n "); return; } int tid = (last_thread + 1)% settings.num_threads;//Select a thread by Round-robin algorithm Libevent_thread *thread = threads + tid ;//cache this selected thread last_thread = tid;//update the last selected thread number//set cq_item fields ITEM-GT;SFD = SFD;//SFD is the connection socket Item->init_sta Te = init_state; Item->event_flags = Event_flags; Item->re

-Feature ScalingWhen we are faced with multidimensional feature problems, we need to ensure that the multidimensional features have similar scales, which will help the gradient descent algorithm to converge faster.Take the housing price forecast problem as an example, assuming that the two characteristics we use, namely the size of the house and the number of rooms, the size value range is 0-2000 square feet, and the value of the room number is 0-5, which causes the gradient descent algorithm to

REDIRECT:> Arithmetic, controller: CPUMemory: RAMInput device/Output devicePrograms: Directives and dataController: InstructionThe arithmetic device:Memory:Address bus: Memory addressingData bus: Transferring dataControl Summary: Control instructionsRegister: CPU Ephemeral memoryI/O: Hard disk,ProgramInput device:Output deviceSystem settingsDefault output device: Standard output, STDOUT, 1Default input device: standard input, STDIN, 0Standard error Output: STDERR, 2Standard input: KeyboardStanda

"MSIE [1-6]\.";#limit_conn_zone $binary _remote_addr zone=perip:10m;# #If Enable Limit_conn_zone,add "Limit_conn Perip" to the server section.Server_tokens off;#隐藏nginx版本号 ( curl-i 192.168.4.154 can be viewed, more secure)#log formatLog_format access ' $remote _addr-$remote _user [$time _local] "$request"' $status $body _bytes_sent ' $http _referer '' "$http _user_agent" $http _x_forwarded_for ';#定义日志格式Server{Listen default_server;#listen [::]:80 default_server Ipv6only=on;#监听80端口server_name ww

name of the parser executing the shell program, and $ $ is the value of the first valid parameter, and the value of the 2nd valid parameter is $Note: Many of the syntax features in the shell are the same as in the C language, and many are different. So the more you learn the more easily confused (the essential reason or the use of unfamiliar, less), the solution is: take notes, make a summary, write more code often use2.2.6.3, while loop and case language and reference combination(1) The break

Shutdown and restart commandsShutdown [Options] Time-C cancels the previous shutdown command-H shutdown-R RestartShutdown-r nowOther shutdown commandsHaltPoweroffInit 0Other Restart commandsRebootInit 6System Run Level0 Shutdown 1 Single user2 not fully multiuser, no NFS service included3 Full Multi-user4 Not assigned5 graphical interface6 restartRunLevel querying the current levelUser Exits Login LogoutMount Command 'Commands already mounted in Mount query system-A according to the content of/e

tasklet_ The schedule function will cause the tasklet of the driver to be attached to the Tasklet list of the cpu1. Since cpu0 is dealing with other hardware interrupts, the CPU1 Tasklet is then sent first to the Tasklet_action function call, at which point the HW block is removed from CPU1 's tasklet chain list that needs to be processed. A corresponding Tasklet is actually in the execution state on the cpu0.When we design tasklet, we stipulate that the same type of tasklet can only be execute

. Command instance:Example one: output log22.txt file content and add line numberCommand: Cat-n log22.txt log33.txtExample Two: merging the contents of two files and adding line numbersCommand: Cat-b log22.txt log33.txtDescription: Add line numbers to the contents of the file Log22.txt and Log33.txt and print to the screenExample Three: add a line number to the file and enter it into another fileCommand: Cat-n log22.txt > Log.logNote: Add the file Log22.txt and enter it into Log.log.Example four

basis.) "Normal" mode, as the name implies, is the one used most often at Google. It ' s appropriate for everyday heap-checking use.In addition, there is and other possible modes: as-is local as-is is the most flexible mode; It allows specify the various knobs of the heap checker explicitly. local activates the explicit Heap-check instrumentation, but does no turn on any whole-progra M leak checking.Unfortunately, it's still not checked out:The above disclosure stati

' People '8. Other operationsTo modify a table structure:First Deactivate user table (new version not available)Disable ' user 'Add two column families F1 and F2Alter ' people ', NAME = ' F1 'Alter ' user ', NAME = ' F2 'Enabling table enable ' user '# # #disable ' user ' (new version not available)Delete a column family:Alter ' user ', NAME = ' F1 ', METHOD = ' delete ' or alter ' user ', ' delete ' = ' F1 'Add Column Family F1 also delete column family F2Alter ' user ', {name = ' F1 '}, {name

you want to do this? Talk about your strengths, I only care about technology. (Quality problem is a place to add goodwill)A: (1) from the work to say: to ensure the safety of the physical basis of the computer room, such as routers, switches, PCs and servers to operate properly, the data migration and backup, the host and service level monitoring, writing reports to the superior, the operating system installation configuration, the Troubleshooting service software.(2) The value of an operation

connection arrives.Typically, you will not just listen to one connection, but call the Accept () method in the while loop. As in the following example:while (true) { Socketchannel Socketchannel = serversocketchannel.accept (); Do something with Socketchannel ...}Of course, you can also use exit criteria other than true in the while loop.Non-blocking modeServersocketchannel can be set to non-blocking mode. In nonblocking mode, the Accept () method returns immediately, or null if

:Print('recv[%s]:%s'%(str (CLIENTADDR), recvdata))Else: Print('[%s] client is closed'%str (CLIENTADDR)) Clientsocket.close () G_needdelclientinfolist.append (clientsock ET,CLIENTADDR))exceptException as Result:Pass forNeeddelclientinfoinchNeedDelClientInfoList:g_socketList.remove (needdelclientinfo)if __name__=='__main__': Main ()Client#Coding=utf-8 fromSocketImport*ImportRandomImportTimeserverip= Raw_input ("Please enter the IP of the server:") Connnum= Raw_input ("Pl

themselves. When several nodes have been added, Nil.next points to the head node, while nil.pre points to the tail node, and similarly, the pre of the head node is no longer null but points to nil, and next to the tail node is no longer null, it also points to nil. The advantage of this is that when we judge the boundary conditions, we do not need to judge whether it is empty, especially when the node is deleted, only two sentences can be written. However, this also brings some problems, that i

;Importorg.springframework.web.client.RestTemplate;ImportCom.jacky.cloud.entity.User;ImportCom.netflix.hystrix.contrib.javanica.annotation.HystrixCommand; @RestController Public classMoviecontroller {@AutowiredPrivateresttemplate resttemplate; @GetMapping ("/movie/{id}") @HystrixCommand (Groupkey= "UserGroup1", Commandkey = "FindUserByIdCommand1", commandproperties ={@HystrixProperty (name= "Execution.isolation.thread.timeoutInMilliseconds", value = "1000"), @HystrixProperty (name= "Execution.ti

Next, return true, or false to continue the next round. Why there is a value inconsistency, because in a race condition, when this thread assigns value value to current, other threads may modify the value of values, so that there is a case of inconsistency between the present and the value. Can be seen to compareandset similar optimistic lock, timely failure. In summary, the visibility of value is guaranteed by voilate, and atomic operations are guaranteed by Compareandset.The other way, the op

the transformed values to the consumer. 1 --Filter filter for pipes and filters2 --The producer and the consumer pass the value through the filter3 --this model is generated by consumer-driven producers. 4 5 --counter Functions6 functionGetCount (x)7 return function()8x=x+19 returnxTen End One End A --create a closed counter - LocalCount = GetCount (0) - --Send new Value the functionSend (x) - Coroutine.yield(x) - End - --Start a synergistic program + functionreceive (P