How to disable caching with HttpClient get in Angular 6










2














I'm writing an Angular SPA app, that uses HttpClient to get values from my backend.



What is the easy way to tell it not to cache? The first time I ask it gets the value, then it refuses to make subsequent queries.



Thanks,
Gerry










share|improve this question





















  • Do you have control of the backend as well?
    – user184994
    Nov 9 at 19:51










  • can you include the code of these requests?, and the component template also, and what backend framework are you using if any?
    – Hussein
    Nov 9 at 19:52










  • As far as I know you can't. I thought this was a function of the browser. I have heard of hacks like adding a random integer to the get so the browser doesn't match with a previous request. Otherwise I just post to my API. Caching get calls has caused me so much pain in the past.
    – Ryan E.
    Nov 9 at 19:53










  • Looks like you can add some header attributes to your requests -> stackoverflow.com/questions/37755782/… Looks like you can control this server side as well according to one of the commenters.
    – Ryan E.
    Nov 9 at 19:54
















2














I'm writing an Angular SPA app, that uses HttpClient to get values from my backend.



What is the easy way to tell it not to cache? The first time I ask it gets the value, then it refuses to make subsequent queries.



Thanks,
Gerry










share|improve this question





















  • Do you have control of the backend as well?
    – user184994
    Nov 9 at 19:51










  • can you include the code of these requests?, and the component template also, and what backend framework are you using if any?
    – Hussein
    Nov 9 at 19:52










  • As far as I know you can't. I thought this was a function of the browser. I have heard of hacks like adding a random integer to the get so the browser doesn't match with a previous request. Otherwise I just post to my API. Caching get calls has caused me so much pain in the past.
    – Ryan E.
    Nov 9 at 19:53










  • Looks like you can add some header attributes to your requests -> stackoverflow.com/questions/37755782/… Looks like you can control this server side as well according to one of the commenters.
    – Ryan E.
    Nov 9 at 19:54














2












2








2







I'm writing an Angular SPA app, that uses HttpClient to get values from my backend.



What is the easy way to tell it not to cache? The first time I ask it gets the value, then it refuses to make subsequent queries.



Thanks,
Gerry










share|improve this question













I'm writing an Angular SPA app, that uses HttpClient to get values from my backend.



What is the easy way to tell it not to cache? The first time I ask it gets the value, then it refuses to make subsequent queries.



Thanks,
Gerry







angular caching httpclient






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 9 at 19:47









Gerry

66641528




66641528











  • Do you have control of the backend as well?
    – user184994
    Nov 9 at 19:51










  • can you include the code of these requests?, and the component template also, and what backend framework are you using if any?
    – Hussein
    Nov 9 at 19:52










  • As far as I know you can't. I thought this was a function of the browser. I have heard of hacks like adding a random integer to the get so the browser doesn't match with a previous request. Otherwise I just post to my API. Caching get calls has caused me so much pain in the past.
    – Ryan E.
    Nov 9 at 19:53










  • Looks like you can add some header attributes to your requests -> stackoverflow.com/questions/37755782/… Looks like you can control this server side as well according to one of the commenters.
    – Ryan E.
    Nov 9 at 19:54

















  • Do you have control of the backend as well?
    – user184994
    Nov 9 at 19:51










  • can you include the code of these requests?, and the component template also, and what backend framework are you using if any?
    – Hussein
    Nov 9 at 19:52










  • As far as I know you can't. I thought this was a function of the browser. I have heard of hacks like adding a random integer to the get so the browser doesn't match with a previous request. Otherwise I just post to my API. Caching get calls has caused me so much pain in the past.
    – Ryan E.
    Nov 9 at 19:53










  • Looks like you can add some header attributes to your requests -> stackoverflow.com/questions/37755782/… Looks like you can control this server side as well according to one of the commenters.
    – Ryan E.
    Nov 9 at 19:54
















Do you have control of the backend as well?
– user184994
Nov 9 at 19:51




Do you have control of the backend as well?
– user184994
Nov 9 at 19:51












can you include the code of these requests?, and the component template also, and what backend framework are you using if any?
– Hussein
Nov 9 at 19:52




can you include the code of these requests?, and the component template also, and what backend framework are you using if any?
– Hussein
Nov 9 at 19:52












As far as I know you can't. I thought this was a function of the browser. I have heard of hacks like adding a random integer to the get so the browser doesn't match with a previous request. Otherwise I just post to my API. Caching get calls has caused me so much pain in the past.
– Ryan E.
Nov 9 at 19:53




As far as I know you can't. I thought this was a function of the browser. I have heard of hacks like adding a random integer to the get so the browser doesn't match with a previous request. Otherwise I just post to my API. Caching get calls has caused me so much pain in the past.
– Ryan E.
Nov 9 at 19:53












Looks like you can add some header attributes to your requests -> stackoverflow.com/questions/37755782/… Looks like you can control this server side as well according to one of the commenters.
– Ryan E.
Nov 9 at 19:54





Looks like you can add some header attributes to your requests -> stackoverflow.com/questions/37755782/… Looks like you can control this server side as well according to one of the commenters.
– Ryan E.
Nov 9 at 19:54













1 Answer
1






active

oldest

votes


















0














Using meta HTML tags, Disable browser caching:-



<meta http-equiv="cache-control" content="no-cache, must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">


or,



Add headers in http request as:-



headers = new Headers(
'Cache-Control': 'no-cache, no-store, must-revalidate, post-
check=0, pre-check=0',
'Pragma': 'no-cache',
'Expires': '0'
);





share|improve this answer




















  • Actually I added a CustomHttpInterceptor service to do this for all of my http requests.
    – Gerry
    Nov 15 at 17:20










  • Yes, adding it in interceptor for every http request is a good idea.
    – Mahi
    Nov 15 at 17:36










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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














Using meta HTML tags, Disable browser caching:-



<meta http-equiv="cache-control" content="no-cache, must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">


or,



Add headers in http request as:-



headers = new Headers(
'Cache-Control': 'no-cache, no-store, must-revalidate, post-
check=0, pre-check=0',
'Pragma': 'no-cache',
'Expires': '0'
);





share|improve this answer




















  • Actually I added a CustomHttpInterceptor service to do this for all of my http requests.
    – Gerry
    Nov 15 at 17:20










  • Yes, adding it in interceptor for every http request is a good idea.
    – Mahi
    Nov 15 at 17:36















0














Using meta HTML tags, Disable browser caching:-



<meta http-equiv="cache-control" content="no-cache, must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">


or,



Add headers in http request as:-



headers = new Headers(
'Cache-Control': 'no-cache, no-store, must-revalidate, post-
check=0, pre-check=0',
'Pragma': 'no-cache',
'Expires': '0'
);





share|improve this answer




















  • Actually I added a CustomHttpInterceptor service to do this for all of my http requests.
    – Gerry
    Nov 15 at 17:20










  • Yes, adding it in interceptor for every http request is a good idea.
    – Mahi
    Nov 15 at 17:36













0












0








0






Using meta HTML tags, Disable browser caching:-



<meta http-equiv="cache-control" content="no-cache, must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">


or,



Add headers in http request as:-



headers = new Headers(
'Cache-Control': 'no-cache, no-store, must-revalidate, post-
check=0, pre-check=0',
'Pragma': 'no-cache',
'Expires': '0'
);





share|improve this answer












Using meta HTML tags, Disable browser caching:-



<meta http-equiv="cache-control" content="no-cache, must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">


or,



Add headers in http request as:-



headers = new Headers(
'Cache-Control': 'no-cache, no-store, must-revalidate, post-
check=0, pre-check=0',
'Pragma': 'no-cache',
'Expires': '0'
);






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 9 at 20:57









Mahi

685319




685319











  • Actually I added a CustomHttpInterceptor service to do this for all of my http requests.
    – Gerry
    Nov 15 at 17:20










  • Yes, adding it in interceptor for every http request is a good idea.
    – Mahi
    Nov 15 at 17:36
















  • Actually I added a CustomHttpInterceptor service to do this for all of my http requests.
    – Gerry
    Nov 15 at 17:20










  • Yes, adding it in interceptor for every http request is a good idea.
    – Mahi
    Nov 15 at 17:36















Actually I added a CustomHttpInterceptor service to do this for all of my http requests.
– Gerry
Nov 15 at 17:20




Actually I added a CustomHttpInterceptor service to do this for all of my http requests.
– Gerry
Nov 15 at 17:20












Yes, adding it in interceptor for every http request is a good idea.
– Mahi
Nov 15 at 17:36




Yes, adding it in interceptor for every http request is a good idea.
– Mahi
Nov 15 at 17:36

















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