keep-alive

vue组件name的作用小结

流过昼夜 提交于 2019-12-14 16:21:48
我们在写vue项目的时候会遇到给组件命名 这里的name非必选项,看起来好像没啥用处,但是实际上这里用处还挺多的 ? 1 2 3 export default { name: 'xxx' } 1.当项目使用keep-alive时,可搭配组件name进行缓存过滤 举个例子: 我们有个组件命名为detail,其中dom加载完毕后我们在钩子函数mounted中进行数据加载 export default { name:'Detail' }, mounted(){ this.getInfo(); }, methods:{ getInfo(){ axios.get('/xx/detail.json',{ params:{ id:this.$route.params.id } }).then(this.getInfoSucc) } } 因为我们在App.vue中使用了keep-alive导致我们第二次进入的时候页面不会重新请求,即触发mounted函数。 有两个解决方案,一个增加activated()函数,每次进入新页面的时候再获取一次数据。 还有个方案就是在keep-alive中增加一个过滤,如下图所示: <div id="app"> <keep-alive exclude="Detail"> <router-view/> </keep-alive> </div> 2.DOM做递归组件时

Java DatagramSocket setting keep-alive option

人走茶凉 提交于 2019-12-13 20:28:38
问题 I'm trying to create a datagramsocket with and datagrampacket to send with the keep-alive option. I'm confused about how to set this though. Is there a simple way to do it like datagramsocket.setKeepAlive(true); ? EDIT: Sorry, I meant setting the time to live of a packet. Is there a way I can set it so if it isn't received, it will stay until it is received? 回答1: UDP is what's called connectionless protocol, i.e. no connection is established, you just send packets to an ip address/port tuple.

Prevent JAXRSClientFactory to reuse connections

笑着哭i 提交于 2019-12-13 18:50:30
问题 I am using JAXRSClientFactory to instantiate REST clients for integration test purpose. Between two tests, I restart my Jetty server, and instantiate new REST clients, to the same URL. However, it seems that CXF is using some kind of connection pooling, or connection keep-alive system under the hood, since I get connection errors for the first test following the restart of the server. I have not found anything stating the use of connection pooling in the documentation though : It is the case

Shouldn't the IIS send Keep-Alive header

安稳与你 提交于 2019-12-13 13:28:39
问题 I've enabled "HTTP keep-alive" in IIS 7.5 settings. But still, the IIS doesn't respond with Connection: keep-alive header (to both FF and Chrome) As I noticed, Nginx responds with this header when I enable keep-alive on it. Shouldn't the Connection: keep-alive header be sent by server in response to requests? 回答1: In HTTP/1.1 persistent connections are the default: http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8 In other words, IIS doesn't really need to (however Apache seems to

Best method to close a keep-alive FTP or FTPS connection in C# (.NET 4.6)?

流过昼夜 提交于 2019-12-13 12:13:43
问题 In C# (.NET 4.6) I am using a keep-alive FTPS connection to download a couple of files in a loop like this: foreach (string filename in filenames) { string requestUriString = GetFtpUriString(myDir) + "/" + filename; FtpWebRequest request = (FtpWebRequest)WebRequest.Create(requestUriString); request.Method = WebRequestMethods.Ftp.DownloadFile; request.Credentials = new NetworkCredential(myFtpsUsername, myFtpsPassword); request.EnableSsl = true; request.ConnectionGroupName =

Why aren't persistent connections supported by URLLib2?

拥有回忆 提交于 2019-12-12 08:44:58
问题 After scanning the urllib2 source, it seems that connections are automatically closed even if you do specify keep-alive. Why is this? As it is now I just use httplib for my persistent connections... but wonder why this is disabled (or maybe just ambiguous) in urllib2. 回答1: It's a well-known limit of urllib2 (and urllib as well). IMHO the best attempt so far to fix it and make it right is Garry Bodsworth's coda_network for Python 2.6 or 2.7 -- replacement, patched versions of urllib2 (and some

How to set the keepalive timeout in Android?

别等时光非礼了梦想. 提交于 2019-12-12 07:07:07
问题 I'd like to lower the TCP keepalive time on a Socket I'm opening from 2 hours to something on the order of ten minutes. I can make it use keepalive with socket.setKeepAlive(true), but how can I control the time before a keepalive packet is sent? It looks like I could do this if I was using the NDK, but I want to distribute this code as a jar, so that's not ideal for me. 回答1: This is probably too obvious an answer [i.e. it's not an option for your specific case] but you can of course implement

Using keep-alive: ORA-00933: SQL command not properly ended

牧云@^-^@ 提交于 2019-12-12 05:37:24
问题 I'd like to use squirrel-sql s keep-alive feature since my Oracle database connections get cut if they idle for too long. It's a self-explanatory feature - or so one would expect - and also covered on SO. However, the obvious SELECT 1 FROM DUAL; does not cut it and results in this error: 2016-10-21 16:43:51,879 [Thread-4] INFO net.sourceforge.squirrel_sql.client.session.SessionConnectionKeepAlive - SessionConnectionKeepAlive (...) running SQL: SELECT 1 FROM DUAL; 2016-10-21 16:43:51,882

How does IIS / ASP.NET handle dead connections? (no HTTP Keep-Alive in effect)

杀马特。学长 韩版系。学妹 提交于 2019-12-12 03:53:33
问题 Can IIS / ASP.NET make use of the TCP keepalive option to detect dead connections? Note that these connections do not have the HTTP Keep-Alive option in effect. These are connections, just abandoned by the clients, leaving IIS / ASP.NET threads hanging, waiting for data. Are there mechanisms in place by which IIS / ASP.NET handles such scenarios? 回答1: ASP.NET only handles HTTP data sent over the connection, the period where there is no HTTP happening, but the TCP connection is kept alive

iOS doesn't to use http keep-alive. Very high latency

大兔子大兔子 提交于 2019-12-12 03:38:05
问题 I wanted to test latency for my server, so I sent a rest request. Using a rest api client, i got around 500 ms latency from desktop, but when i do the same request on iOS Simulator (using AFNetworking) , I am getting latency of 1.8 seconds. My server sends keep alive headers, and I noticed that the first request from my PC is of a similar latency as IOS. How do I make iOS honour keep alive , or reduce latency ? Since I am making a realtime app , it is a must that I have low latency. From the