Ive been constantly getting the same error,like "HTTP 403.9 - Access Forbidden: Too many users are connected Internet Information Services Technical Information". I went through this site and found this command -> "C:\Inetpub\AdminScripts\adsutil set w3svc/MaxConnections 40" to
我创建了一个sql,它对一列中的所有值进行更新
UPDATE `Blackout_POC2.measurements_2020`
SET visitor.customerId_enc = enc.encrypted
FROM `Blackout_POC2.encrypted` AS enc
WHERE dateAmsterdam="2020-01-05"
AND session.visitId = enc.visitId
AND visitor.customerId = enc.plain
其中dateAmsterdam是measurements_2020表的分区键,encry
//my_serial_queue is a serial_dispatch_queue
dispatch_async(my_serial_queue, ^{
//access a shared resource such as a bank account balance
[self changeBankAccountBalance];
});
如果我提交100个任务,每次访问并更改银行帐户余额,我知道串行队列将依次执行每个任务,但使用dispatch_async时这些任务是否也会依次完成?
如果我异步提交给串行队列的任务#23需要很长时间才能完成呢?任务24是在任务2
当我想启动水壶时: $ cd ../kettle/data-integration
$ spoon.sh 出现以下错误: Java HotSpot(TM) Client VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
Exception in thread "main" java.lang.NoClassDefFoundError: org/pentaho/ui/xul/XulEventSource
at java.lang.ClassLoader.defineClass
在Java应用程序中,我经常看到这样的错误:org.springframework.r2dbc.UncategorizedR2dbcException: executeMany; SQL [select * from table1 where id=:id and column1 <> :a for update]; could not serialize access due to concurrent update; nested exception is io.r2dbc.postgresql.ExceptionFactory$PostgresqlTransientExcep
我使用nodejs服务器在couchdb服务器上注册用户。
这个想法是,我的android应用程序向nodejs服务器发送ajax注册请求。nodejs服务器将该请求转发给couchdb服务器,然后将couchdb服务器响应转发给android应用程序。
这是nodejs服务器的代码:
var dispatcher = require('httpdispatcher');
var request = require('request-json');
dispatcher.onOptions("/_users", function(req, re