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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...发？频繁触发可能会带来系统负载加重
参考：
http://cn.docs.mongodb.org/manual/administration/replica-set-member-configuration/
http://docs.mongodb.org/manual/reference/connection-string/
http://www.cnblogs.com/magialmoon/p/3268963.html
原创文章，转载请注明： 转...
What is the meaning and difference between subject, user and principal?
...clarify "User - subset of principal"? If John is the subject and "account #123" is his principal, the user is who? Are there two John's? Since Genus > Species > Individual is increasingly specific, John (user) should be more specific than John (subject). Or am I missing something?
...
^M at the end of every line in vim
....vimrc file and :source ~/.vimrc
" then you can do: Dos2Unix
" dos2unix ^M
fun! Dos2unixFunction()
let _s=@/
let l = line(".")
let c = col(".")
try
set ff=unix
w!
"%s/\%x0d$//e
catch /E32:/
echo "Sorry, first save the file."
endtry
let @/=_...
static const vs #define
...uld be very like to see a comparison table.
– Unknown123
Apr 25 '19 at 3:49
2
...
What's the difference between equal?, eql?, ===, and ==?
...s-specific meaning.
This is the most common comparison, and thus the most fundamental place where you (as the author of a class) get to decide if two objects are "equal" or not.
=== — case equality
For class Object, effectively the same as calling #==, but typically overridden by descendants to ...
java : convert float to String and String to float
... say this is the least effective method and the worse coding practice but, fun to use,
float val=10.0;
String str=val+"";
the empty quotes, add a null string to the variable str, upcasting 'val' to the string type.
share
...
How to handle AccessViolationException
...rogram
{
static void InvokeCse()
{
IntPtr ptr = new IntPtr(123);
System.Runtime.InteropServices.Marshal.StructureToPtr(123, ptr, true);
}
private static void ExecInThisDomain()
{
try
{
var o = new BoundaryLessExecHelper();
...
Difference between CouchDB and Couchbase
...er 2.0 release (currently at Developer Preview 3) will add index and query functionality. While Couchbase Server 2.0 will incorporate substantial technology from the CouchDB project, it will not be upward compatible with CouchDB and it shouldn’t be viewed as a “version of CouchDB.” [emphasis ...
Undo a merge by pull request?
...om.com>
Date: Mon Apr 29 06:12:38 2013 -0700
Merge pull request #123 from john/foo_and_bar
Add foo and bar
commit a507888e9fcc9e08b658c0b25414d1aeb1eef45e
Author: John Doe <john@doe.com>
Date: Mon Apr 29 12:13:29 2013 +0000
Add bar
commit 470ee0f407198057d5cb1d6427bb837...
What does PermGen actually stand for?
... And in JDK 8 there is no permanent generation at all! It's fun to see this answer evolve over the years.
– Brian Gordon
Jan 8 '15 at 3:06
3
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