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...有在出现异常情况的时候才查询,架构图如下: Degradation 实现的关键点在于通过error_page处理异常,并且完成服务降级: limit_conn_zone $server_name zone=perserver:1m; error_page 500 502 503 504 = @failover; fastcgi_cache_path /tmp leve...
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Detecting a mobile browser

I'm looking for a function which return boolean value if user has mobile browser or not. 36 Answers ...
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What is the iPad user agent?

... I gather, the iPad is using iPhone OS, but with a different screen resolution from the iPhone and iPod touch. So many sites may have to change their user agent detection to adapt to the iPad. ...
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Importing CommonCrypto in a Swift framework

How do you import CommonCrypto in a Swift framework for iOS? 16 Answers 16 ...
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NSDate beginning of day and end of day

... I have a strange behaviour where if I add the day component I get 23:00 of the previous day. – Mike M Jul 18 '14 at 10:24 3 ...
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RESTful call in Java

...However, I don't know how to make the call. Do I need to use the URLConnection or others? Can anyone help me. thank you. 11...
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Read text file into string array (and write)

... As of Go1.1 release, there is a bufio.Scanner API that can easily read lines from a file. Consider the following example from above, rewritten with Scanner: package main import ( "bufio" "fmt" "log" "os" ) // readLines reads a whole file in...
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How and where are Annotations used in Java?

What are the major areas that we can use Annotations? Is the feature a replacement for XML based configuration? 15 Answers ...
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How to efficiently concatenate strings in go

...ring is a primitive type, which means it is read-only, and every manipulation of it will create a new string. 18 Answers ...
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Objective-C and Swift URL encoding

...To escape the characters you want is a little more work. Example code iOS7 and above: NSString *unescaped = @"http://www"; NSString *escapedString = [unescaped stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]]; NSLog(@"escapedString: %@", escapedS...