Web API performance optimization (I) compression and api Performance Optimization

Web API performance optimization (I) compression and api Performance Optimization

Simple Application Scenario: retrieve log JSON information by page.

Simple implementation, simple record

When not compressed

Use PostMan to request http: // localhost: 34390/api/gpm/syslog/page? Pageindex = 1 & pagesize = 10

Some technologies are used: AOP, IOC, Request/Response mode (I personally think it is very suitable for WebAPI), which is not described here. ApiResullt is a Class I encapsulate (automatic serialization). As for why I create one myself, I just feel comfortable! This is the most important thing.

Response result: Size: 2.04KB, Content-Length: 1607

Use Compression

Use DotNetZip for compression. Of course, use the AOP method.Default compression level

1 // <summary> 2 // compress the returned information 3 /// </summary> 4 [AttributeUsage (AttributeTargets. class | AttributeTargets. method, Inherited = true, AllowMultiple = true)] 5 public class CompressionAttribute: ActionFilterAttribute 6 {7 public override void OnActionExecuted (HttpActionExecutedContext actionExecutedContext) 8 {9 var content = actionExecutedContext. response. content; 10 var bytes = content = null? Null: content. ReadAsByteArrayAsync (). Result; 11 var compressContent = bytes = null? New byte [0]: CompressionHelper. deflateByte (bytes); 12 actionExecutedContext. response. content = new ByteArrayContent (compressContent); 13 actionExecutedContext. response. content. headers. remove ("Content-Type"); 14 actionExecutedContext. response. content. headers. add ("Content-encoding", 15 string. equals (actionExecutedContext. request. headers. acceptEncoding. first (). value, "deflate") 16? "Deflate" 17: "gzip"); 18 actionExecutedContext. response. content. headers. add ("Content-Type", "application/json; charset = UTF-8"); 19 base. onActionExecuted (actionExecutedContext ); 20} 21} 22 // <summary> 23 // compression help class 24 // </summary> 25 internal static class CompressionHelper26 {27 public static byte [] DeflateByte (byte [] str) 28 {29 if (str = null) 30 {31 return null; 32} 33 using (var output = new MemoryStream () 34 {35 using (var compressor = new Ionic. zlib. GZipStream (output, Ionic. zlib. compressionMode. compress, Ionic. zlib. compressionLevel. default) 36 {37 compressor. write (str, 0, str. length); 38} 39 return output. toArray (); 40} 41} 42}

Request Response Results: Size: 833B, Content-Length: 329. The improvement effect is very obvious. Careful friends will find that the response time is getting longer, of course, this is caused by compression time, but it has little impact.