Caching 20230221 (#390)

* prevent cache modification when parallel fetches are waiting on the same resource

* package updates

Author: carrolp

lib/FetchEnvs.js

@@ -89,7 +89,7 @@ module.exports = class FetchEnvs {
     // When updating a key, updating it for all users
     for( const cacheUser of globalResourceCacheUsers ) {
       if( globalResourceCache.has(`${cacheUser}/${cacheKey}`) ) {
-        globalResourceCache.set(`${cacheUser}/${cacheKey}`, resource);
+        globalResourceCache.set(`${cacheUser}/${cacheKey}`, clone(resource));
         updated = true;
       }
     }
@@ -162,7 +162,7 @@ module.exports = class FetchEnvs {
       }
 
       // Wait for the outstanding api call to complete, use it's value
-      resource = await singleResourceQueryCache[cacheKey];
+      resource = clone( await singleResourceQueryCache[cacheKey] );
     }
 
     return resource;