persistent-connection

问题 Assuming I do not have a Grid setup, what is the Maximum number of simultaneous Chrome threads I can start from Selenium WebDriver? Is it 5? And does it hold good for Chrome Headless as well? 回答1: Browser connection limitations Browsers limit the number of HTTP connections with the same domain name. This restriction is defined in the HTTP specification (RFC2616). Most modern browsers allow six connections per domain where as most of the older browsers allow only two connections per domain.

问题 I have 10 application servers and 1 mysql database. I would like to do connection pooling for mysql, but simply enabling mysql_pconnect() will not work since it'll cause some servers to have more connections than others. What's the best solution for this scenario..? 回答1: Why do you want to use persistent connections? They are likely to cause trouble and will not improve performance noticeably (in all likelihood). Run some performance tests on production-grade hardware in your lab, and you'll

问题 How can I write Http server in TornadoWeb that will support persistent Connections. I mean will be able to receive many requests and answer to them without closing connection. How does it actually work in async? I just want to know how to write handler to handle persistent connection. How actually would it work? I have handler like that: class MainHandler(RequestHandler): count = 0 @asynchronous def post(self): #get header content type content_type = self.request.headers.get('Content-Type')

问题 I set PDO::ATTR_PERSISTENT => true , but show my text with other encoding! همراه سوران باشید در Please help me out // This is not helpful : `PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8',` // my default encoding in phpmyadmin is utf8-general 来源： https://stackoverflow.com/questions/29714253/pdoattr-persistent-utf-8-encoding

问题 I have a multi-user PHP web application that can interact with an FTP server via AJAX. The application allows the user to browse an FTP site. Javascript makes an AJAX call which communicates with a server-script that returns a list of files and directories within a given directory. This works fine. However, each time a directory listing is requested, the server must re-establish a connection with the FTP server, which takes a lot of time. I need to persist an FTP connection PHP resource

问题 I am using jersey to implement a SSE scenario. The server keeps connections alive. And push data to clients periodically. In my scenario, there is a connection limit, only a certain number of clients can subscribe to the server at the same time. So when a new client is trying to subscribe, I do a check(EventOutput.isClosed) to see if any old connections are not active anymore, so they can make room for new connections. But the result of EventOutput.isClosed is always false, unless the client

问题 I'm new to Flash. I'm planning to create a game client in Flash (running in browser) that needs to talk to a server written in Java. Connection between client and server needs to be persistent. I'm aware of XMLSocket - is that the only way to go? Any recommendations? Thanks! 回答1: There's a Socket class, which lets you use real TCP when talking to a server. Downside - you'll have to implement the protocol yourself (that's implementing HTTP client in most cases. Maybe somebody already did it)

问题 Where is defined timeout of persistent connections? Is it possible to change it? 回答1: Check out the wait_timeout parameter for my.ini 来源： https://stackoverflow.com/questions/4948004/how-to-change-timeout-for-mysql-persistent-connections

问题 I would like to use global temporary tables to store some expensive intermediary data. The data is transient, but good for the duration of the php session so it seems that using global temporary tables with on commit preserve rows would be ideal. But.. it looks like global temporary table data is only available to the oracle session that created it. So this raises the issue of how could I ensure that oci_pconnect would get back the same oracle session, as I have read that the oracle sessions

问题 I'm using NSURLConnection to perform a series of HTTP requests to the same host asynchronously, i. e. with [initWithRequest:delegate:startImmediately:] and a delegate. When connectionDidFinishLoading notification comes to the delegate, I release my connection object, then initialize and initiate another one, to the same host. Question - will the underlying socket be reused? The Connection:keep-alive server header is there, but I have no way of making sure that it's being respected. I mean,