Angular 5 and Service Worker: How to exclude a particular path from ngsw-config.json

Question

I have ngsw-config.json (taken from the docs):

    {       "index": "/index.html",       "assetGroups": [{         "name": "app",         "installMode": "prefetch",         "resources": {           "files": [             "/favicon.ico",             "/index.html"           ],           "versionedFiles": [             "/*.bundle.css",             "/*.bundle.js",             "/*.chunk.js"           ]         }       }, {         "name": "assets",         "installMode": "lazy",         "updateMode": "prefetch",         "resources": {           "files": [             "/assets/**"           ]         }       }]     } 

On my site there is a link to the RSS feed /api/rss, which should open in a new browser tab without loading Angular app. How can I exclude it from a list of resources whose request is redirected to index.html?

UPD: I tried but not working the following config (see !/api/rss):

    {       "index": "/index.html",       "assetGroups": [{         "name": "app",         "installMode": "prefetch",         "patterns": ["!/api/rss"],         "resources": {           "files": [             "/favicon.ico",             "/index.html",             "!/api/rss"           ],           "versionedFiles": [             "/*.bundle.css",             "/*.bundle.js",             "/*.chunk.js"           ]         }       }, {         "name": "assets",         "installMode": "lazy",         "updateMode": "prefetch",         "resources": {           "files": [             "/assets/**"           ]         }       }]     } 

Answer 1

Thanks to the Pedro Arantes advice, I reached the next working config (see dataGroups and "maxAge": "0u"):

{   "index": "/index.html",   "dataGroups":   [     {       "name": "api",       "urls": ["/api"],       "cacheConfig": {         "maxSize": 0,         "maxAge": "0u",         "strategy": "freshness"       }     }   ],   "assetGroups":   [     {       "name": "app",       "installMode": "prefetch",       "resources": {         "files": [           "/favicon.ico",           "/index.html"         ],         "versionedFiles": [           "/*.bundle.css",           "/*.bundle.js",           "/*.chunk.js"         ]       }     },     {       "name": "assets",       "installMode": "lazy",       "updateMode": "prefetch",       "resources": {         "files": [           "/assets/**"         ]       }     }   ] }