caching - React Native - Fetch call cached -

i building app in react native makes fetch calls rely on date information server. have noticed seems cache response , if run fetch call again returns cached response rather new information server.

my function follows:

gotoall() {   asyncstorage.getitem('fbid')     .then((value) => {       api.loadcurrentuser(value)         .then((res) => {           api.loadcontent(res['registereduser']['id'])             .then((res2) => {               console.log(res2);               this.props.navigator.push({                 component: contentlist,                 title: 'all',                 passprops: {               content: res2,             user: res['registereduser']['id']           }         })       });     });   })   .catch((error) => {console.log(error);})   .done(); } 

and function api.js im calling follows:

loadcontent(userid){   let url = `http://####.com/api/loadcontent?user_id=${userid}`;   return fetch(url).then((response) => response.json()); } 

you can set header prevent request being cached. example below:

return fetch(url, {   headers: {     'cache-control': 'no-cache'   } }).then(function (res) {   return res.json(); }).catch(function(error) {   console.warn('request failed: ', error); });