+1 for the approach, this is lazy loading. Also we should support and give an option to full api load at startup. Basically we should support lazy loading and full loading which can be switch via a configuration. Full loading may important for some cases which need first api call return fast, but not important of having auto scaling of gateways and satisfy with manual scaling.
BTW, images are not properly loading ... On Mon, Jan 30, 2017 at 2:06 PM, Ishara Cooray <[email protected]> wrote: > Hi, > > I am working on $Subject and following is the use case and the approach we > are going to address. > > *Motivation:* > In order to reduce the server startup time we thought of not loading the > apis at the server startup. > Then we need a way to validate api requests to avoid DOS attacks such as > api requests with invalid context, passing to the api core level. > > *Solution:* > Therefore we are planing to load summary of all apis(name, context, > uriTemplates) into memory at server startup so that when an api request > comes to the gateway it will first validate the availability of that > api/resource. > > To get the api summary info there will be Rest Service in APIM core. > > > > > For newly added apis we can update the in memory cache via a JMS Topic > (later we can support for other message brokers as well) . > > > > Following components will be written to address these scenarios. > > > 1. REST Service to retrieve API summary - *API Core* > 2. APISummaryLoader to load APIsSummary at server startup - *GW* > 3. JMS Topic receiver - *Core* > 4. JSM topic listener - *GW* > 5. APIContextValidationHandler - *GW* > > > Thanks & Regards, > Ishara Cooray > Senior Software Engineer > Mobile : +9477 262 9512 <+94%2077%20262%209512> > WSO2, Inc. | http://wso2.com/ > Lean . Enterprise . Middleware > > _______________________________________________ > Architecture mailing list > [email protected] > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > > -- Lakmal Warusawithana Director - Cloud Architecture; WSO2 Inc. Mobile : +94714289692 Blog : http://lakmalsview.blogspot.com/
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