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How to design a multi-user ajax web application to be concurrently safe
...led with lower memory consumption. I think a node.js server and relying on TCP WebSockets really helps with scaling. It completely ruins cross browser compliance though.
– Raynos
Feb 17 '11 at 17:19
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java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
...tion SID. Both SID are different.
So ORACLE session is nothing but a jdbc(tcp) connection; which is nothing but one SID.
If we set maximum cursors as 500 then it is only for one JDBC session/connection/SID.
So we can have many JDBC connection with its respective no of cursors (statements).
Once t...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
...alizer/deserializer at the time for interprocess/interhost communications (TCP and pipes). My goals were to make it as small (in terms of bytes sent over the wire) and fast (in terms of time spent serializing and deserializing) as possible. I thought I might avoid some boxing and unboxing with Typed...
When should I mock?
...to simply instantiate this object (if, for example it tries to establish a TCP connection), use a mock.
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Why does one use dependency injection?
... want to log to the console, sometimes to the file system, sometimes using TCP/IP and a remote logging server, and so on ...
And of course you do NOT want to change all your code (meanwhile you have gazillions of it) and replace all lines
var logger = new Logger();
by:
var logger = new TcpLogge...
Is either GET or POST more secure than the other?
...ersation is encrypted, the only visible portion of communication is on the TCP/IP layer (meaning the IP address and connection port information).
So let me make a big bold statement here. Your website is not provided greater security over one HTTP method than it is another, hackers and newbs all ov...
Why does base64 encoding require padding if the input length is not divisible by 3?
...out additional information usually from somewhere else in your stack, like TCP, checksums, or other methods.
Examples
Here is the example form RFC 4648 (http://tools.ietf.org/html/rfc4648#section-8)
Each character inside the "BASE64" function uses one byte (base256). We then translate that to ...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... DEVICE SIZE/OFF NODE NAME
zebra 3919 root 10u IPv4 19685 0t0 TCP *:discp-client (LISTEN)
[root@RS1 ~]#
*:discp-client (LISTEN)
zebra-0.95a安装好后会自动往系统/etc/servics中添加定义
配置配置
zebra是基本进程，诸如路由器hostname、接口...
When is the thread pool used?
...
Yes. Node provides basic UDP, TCP, and HTTP networking. It provides ONLY asynchronous "pool-based" APIs. All node.js code in the world without exception uses these pool-based asynchronous APIs as there are simply all that is available. Filesystem and chil...
Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...求时间间隔。
后台任务要尽可能少的唤醒CPU，譬如IM通信的长连接心跳时间间隔、一些应用的后台定时唤醒时间间隔等要设计合理。
特殊耗电业务情况可以进行弹窗等友好的交互设计提醒用户该操作会耗用过多电量。
...