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实战低成本服务器搭建千万级数据采集系统 - 更多技术 - 清泛网 - 专注C/C++...
...搜狐微博）。为了节约客户成本，硬件为普通服务器：E5200 双核 2.5G cpu， 4 G DDR3 1333内存，硬盘 500G SATA 7200转硬盘。数据库为mysql。在这样的条件下我们能否实现这个系统目标？当然如果有更好的硬件不是这个文章阐述的内容。...
Create objective-c class instance by name?
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id object = [[NSClassFromString(@"NameofClass") alloc] init];
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List all base classes in a hierarchy of given class?
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answered Sep 9 '09 at 20:28
Jochen RitzelJochen Ritzel
89.3k2525 gold badges181181 silver badges180180 bronze badges
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How to play an android notification sound
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427
If anyone's still looking for a solution to this, I found an answer at How to play ringtone/ala...
Specify an SSH key for git push for a given domain
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edited Apr 13 '17 at 12:13
Community♦
111 silver badge
answered Oct 28 '11 at 10:03
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Installing CocoaPods: no response
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Iulian Onofrei
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answered May 11 '13 at 13:59
AlexAlex
4,35...
server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
...l s_client -showcerts -connect $hostname:$port -servername $hostname \
2>/dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' \
>> $trust_cert_file_location"
Long answer
The basic reason is that your computer doesn't trust the certificate authority that signed the c...
Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...uild 1.6.0_07-b06"), and the HotSpot version (on mine, that's "build 10.0-b23, mixed mode"). I suspect the "11.0" you are seeing is the HotSpot version.
Update: HotSpot is (or used to be, now they seem to use it to mean the whole VM) the just-in-time compiler that is built in to the Java Virtual M...
How to calculate number of days between two given dates?
If I have two dates (ex. '8/18/2008' and '9/26/2008' ), what is the best way to get the number of days between these two dates?
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How to remove leading and trailing white spaces from a given html string?
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248
See the String method trim() - https://developer.mozilla.org/en/JavaScript/Reference/Global_Ob...