前後端灰度發布解決方案

io.jmnarloch

ribbon-discovery-filter-spring-cloud-starter
2.1.0

//內部通過threadlocal實現

final ribbonfiltercontext context = ribbonfiltercontextholder.getcurrentcontext();
//獲取在第二步存放的「version」 （ribbonfiltercontextholder.getcurrentcontext().add("version", version.tostring())
可以在這裡獲取
final set> attributes = collections.unmodifiableset(context.getattributes().entryset());
//查詢eureka中服務的元資料，也就是第一步中設定的metadata
final mapmetadata = server.getinstanceinfo().getmetadata();
//匹配versoin
return metadata.entryset().containsall(attributes);

public class customconcurrencystrategy extends hystrixconcurrencystrategy 

hystrixcommandexecutionhook commandexecutionhook =
hystrixplugins.getinstance().getcommandexecutionhook();
hystrixeventnotifier eventnotifier = hystrixplugins.getinstance().geteventnotifier();
hystrixmetricspublisher metricspublisher = hystrixplugins.getinstance().getmetricspublisher();
hystrixpropertiesstrategy propertiesstrategy =
hystrixplugins.getinstance().getpropertiesstrategy();
this.logcurrentstateofhystrixplugins(eventnotifier, metricspublisher, propertiesstrategy);
hystrixplugins.reset();
hystrixplugins.getinstance().registerconcurrencystrategy(this);
hystrixplugins.getinstance().registercommandexecutionhook(commandexecutionhook);
hystrixplugins.getinstance().registereventnotifier(eventnotifier);
hystrixplugins.getinstance().registermetricspublisher(metricspublisher);
hystrixplugins.getinstance().registerpropertiesstrategy(propertiesstrategy);
} catch (exception e) 
}private void logcurrentstateofhystrixplugins(hystrixeventnotifier eventnotifier,
hystrixmetricspublisher metricspublisher, hystrixpropertiesstrategy propertiesstrategy) 
}@override
public callablewrapcallable(callablecallable) 
@override
public threadpoolexecutor getthreadpool(hystrixthreadpoolkey threadpoolkey,
hystrixpropertycorepoolsize, hystrixpropertymaximumpoolsize,
hystrixpropertykeepalivetime, timeunit unit, blockingqueueworkqueue) 
@override
public threadpoolexecutor getthreadpool(hystrixthreadpoolkey threadpoolkey,
hystrixthreadpoolproperties threadpoolproperties) 
@override
public blockingqueuegetblockingqueue(int maxqueuesize) 
@override
public hystrixrequestvariablegetrequestvariable(hystrixrequestvariablelifecyclerv) 
private final callabletarget;
private final requestattributes requestattributes;
private final mapribbonattributes;
this.target = target;
this.requestattributes = requestattributes;
this.ribbonattributes = ribbonattributes;
}@override
public t call() throws exception 
}return target.call();
} finally }}
}

前後端分離的問題與解決方案

這些天專案有的api出現版本控制問題，著實忙乎了一小陣，因為專案使用tp5的傳統方法進行版本控制 api目錄下進行版本區分，由請求路徑決定使用的版本 但是問題往往是，專案使用了v2版本,但是後端又新建了v3，而前端不知情，所以也趁著這次機會，探索了較為實用的前後端分離問題與解決方案，並做整理。1.後...

前後端分離與跨域的解決方案

前後端分離與跨域的解決方案 cors的原理 vue中axios傳送options預檢請求的原因及如何通過 ps access control allow origin 該字段是必須的，表示接受任意網域名稱的請求，還可以指定網域名稱。access control allow credentials 該...

檔案（切片）上傳實現解決方案 面試 前後端

思路及原理 1.將大檔案切片 file是blob類的例項，利用其slice方法可以將檔案切片 http可以多個併發傳遞 6 7 2.同時併發n個切片的上傳 3.等n個都上傳完，再傳送請求合併切片 為啥不自動合併呢 3.html 0 server.js new multiparty.form pars...