increase TTL of values that do not change in the DwnDataStore impleme…

…ntation

packages/agent/src/store-data.ts

@@ -55,16 +55,19 @@ export class DwnDataStore<TStoreObject extends Record<string, any> = Jwk> implem
 
   /**
    * Index for mappings from Store Identifier to DWN record ID.
+   * Since these values don't change, we can use a long TTL.
    *
-   * Up to 1,000 entries are retained for 2 hours.
+   * Up to 1,000 entries are retained for 30 days.
    */
-  protected _index = new TtlCache<string, string>({ ttl: ms('2 hours'), max: 1000 });
+  protected _index = new TtlCache<string, string>({ ttl: ms('30 days'), max: 1000 });
 
   /**
    * Cache of tenant DIDs that have been initialized with the protocol.
    * This is used to avoid redundant protocol initialization requests.
+   * 
+   * Since these are default protocols and unlikely to change, we can use a long TTL.
    */
-  protected _protocolInitializedCache: TtlCache<string, boolean> = new TtlCache({ ttl: ms('1 hour'), max: 1000 });
+  protected _protocolInitializedCache: TtlCache<string, boolean> = new TtlCache({ ttl: ms('30 days'), max: 1000 });
 
   /**
    * The protocol assigned to this storage instance.