cache-control | cache-control middleware | HTTP library
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Trending Discussions on cache-control
QUESTION
How can I send a file, that I've got received from S3, to Gin as binary response?
Lets say, I have the following code to obtain an image from S3 bucket:
...ANSWER
Answered 2022-Apr-02 at 15:42You're almost done:
Instead of ctx.Write
use this one:
QUESTION
I have been facing this incomplete json error and unable to find the issue. The API response work fine in POSTMAN. But this issue happened in my android emulator and it only happened randomly. This project is build with kotlin dagger-hilt retrofit2 okhttp3 gson.
Success Response
...ANSWER
Answered 2022-Mar-03 at 12:02I suspect the Android emulator might be interfering with you here. I’ve seen issues with it misbehaving, particularly on Windows.
https://issuetracker.google.com/issues/119027639
If you'd like to workaround, consider changing your server to use something other than Connection: close
to terminate your response body. Perhaps chunked encoding or a content-length header.
QUESTION
For some reason, I can't use the Flutterfire CLI to configure an ios app on firebase. I've done this before but this time I'm gettings this error
...ANSWER
Answered 2022-Feb-15 at 16:08It's an authentication issue. Just logout firebase CLI and log in again.
To logout :
QUESTION
I have some react code that is rendering content dynamically via React.createElement
. As such, css is applied via an object. Elements in that dynamic generation can have background image, pointing to a public aws S3 bucket.
It seems that every time my components re-render, the background images are being fetched again from S3. This is delaying the page render. I have S3 meta-data for Cache-Control set on all the objects . Here are request and response headers for background image load -
Response header -
...ANSWER
Answered 2022-Feb-23 at 20:53The reason you're seeing a network request is probably because you're using the Cache-Control: no-cache
header in your request.
As seen here:
The no-cache response directive indicates that the response can be stored in caches, but the response must be validated with the origin server before each reuse, even when the cache is disconnected from the origin server.
Cache-Control: no-cache
If you want caches to always check for content updates while reusing stored content, no-cache is the directive to use. It does this by requiring caches to revalidate each request with the origin server.
Note that no-cache does not mean "don't cache". no-cache allows caches to store a response but requires them to revalidate it before reuse. If the sense of "don't cache" that you want is actually "don't store", then no-store is the directive to use.
See here: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#response_directives
Here is what a full request for a cached asset looks like on my network tab, when the asset returns 304 Not Modified from the validation request. (from S3) This is in a background: url
context.
QUESTION
I've recently begun trying to Dockerize my services and I'm to the point of Dockerizing everything that already has an image built. Now I'm trying to build an image for facileManager (FM) which doesn't yet have one. I've got it mostly working but I'm having an issue when running it behind Nginx. FM is normally an apache-php app and doesn't include install instructions for Nginx. What I've noticed with my container/image is that it works ok when I connect directly to it through a published port but if I try to connect to it through Nginx it errors out complaining about the .htaccess file not working. I'm not an expert in either Apache or Nginx so I did my Googleing but didn't come up with much beyond Wordpress having a similar issue with it's "pretty urls" so I'm hoping someone here can give a hand.
First here is the Github repo for the app: https://github.com/WillyXJ/facileManager/tree/ea159f5f6112727de8422c552aa05b6682aa4d79/server
The .htaccess file specifically is:
...ANSWER
Answered 2022-Feb-08 at 07:21Dot Points:
- include $request_uri in your proxy pass
- provide a resolver in your proxy location block
- declare an entry for your container in Docker's network stack
- use all lower case in your service name
Below is the configuration file I use to reverse proxy through to a Ubiquiti Unifi container. All my certbot is handled off site so I need not consider that here. If you compare our location blocks, the issue will likely become immediately apparent, but I'll explain for clarity's sake.
What you need to look at is your Proxy Pass directive. This is of course where the magic proxying happens. I notice that you have not been including the $request_uri, so any request nginx receives for bound.example.com/testpage1
, it will send a request to the upstream apache server for bound.example.com
. Of course if you need to include a port, as I have done here 8443
, this is the place to do it also.
If you include this variable, it should resolve your problem.
The following does not answer your question, but I thought I would include it also just as some helpful information.
Also, I just want to note that I have included a resolver. The IP address 127.0.0.11 points to Docker's internal DNS resolver. Chances are you won't need to include this, however I did so myself to ensure I didn't get odd problems. Lastly, I'd just like to recommend that you look into upgrading your SSL settings, to ensure that you are safe from attacks from weaker SSL / TLS versions.
I expect that adding the variable $request_uri to your proxy pass directive is all that is required to get your site working.
QUESTION
I fail to enable the CORS for testing with the latest NestJS 8.0.6 and a fresh http + ws project. That said, I want to see the Access-Control-Allow-Origin
in the servers response (so that the client would accept it). Here is my main.ts where I've tried 3 approches: 1) with options, 2) with a method, 3) with app.use. None of them works.
ANSWER
Answered 2021-Sep-20 at 20:29The enableCors
and { cors: true }
options are for the HTTP server (express or fastify). The URL given showing the CORS error came from a socket.io connection. To enable CORS for socket.io
you need to use the options in the @WebsocketGateway()
decorator, like
QUESTION
Client (nuxt
) is up on http://localhost:3000
and the client sends
requests to http://localhost:8080
.
Server (django
) is running on 0.0.0.0:50051
.
Also docker
is up
ANSWER
Answered 2021-Dec-20 at 15:29I needed a proxy to receive requests from the server. So I used envoy proxy. In this way, nginx received the request from the browser and then sent it to a port (for example 5000). On the other hand, envoy
listens to port 5000 and then sends the request to the server running on port 50051.
This is how I designed the tracking of a gRPC
connection.
QUESTION
I'm a novice web developer, but experienced python programmer, and Apache dolt. Recently, I've been tinkering with hosting a small website and learning my way through some hosting issues, Flask, html templates, etc.
I've followed several Flask tutorials about controlling access to pages with @login_required
decorators on access-controlled endpoints and using session
to store a logged in k-v pair. This all works perfectly when running locally on Flask's development server on my local machine. However, when I push this onto my hosting service, I'm getting what I believe is cached behavior to many of the access-controlled endpoints and I'm able to see them after logging out (and checking the session data to ensure the key is removed).
Some specifics...
Using
flask
withsession
for the login info, not flask-login.Hosting on a managed VPS that is using Phusion Passenger as a WSGI interface to Apache
I have no config files in use for Apache...just defaults right now.
Website is very low traffic... Prolly just me & the bots right now. :)
My passenger_wsgi
file:
ANSWER
Answered 2021-Dec-30 at 20:31Since 5.0, passenger will "helpfully" add cache-control headers to responses it deems 'cachable'.
In order to stop this, your application should add the header Cache-Control: no-store
.
To do this globally in Flask as described here:
QUESTION
My situation:
- I have a basic HTML page (intranet) that takes a video and plays it on loop.
- Almost every day a new video gets created and I go to the index.html and change the value of the src.
- The web page is static on a remote display so I need to go and make a refresh to the web page.
HTML Code
...ANSWER
Answered 2021-Dec-10 at 21:57Is there a way to do this by keeping it just with javascript and HTML? (or with ASP.NET/C#)
Plain JavaScript and HTML are client side static code. It cannot modify anything stored on the server. You will need a server side application to handle your video uploads, querying, etc. Pretty much all server side languages supports this feature (PHP, ASP, NodeJS, C++, Go, Rust...)
Have you used/implemented something similar (with pictures, documents, etc.)? What technologies did you use?
It's pretty much depends what you want to do. You can go the MVC route to render the HTML code, or going a separate approach by splitting client side and server side code and link them together with an API design.
QUESTION
I'm trying to send a GET request to the Binance API. But I'm getting this output in my terminal instead of the data:
...ANSWER
Answered 2021-Dec-24 at 04:49The Response
that you're printing is basically just the initial HTTP info (e.g. status and headers). You'll need to wait for the payload as well using methods depending on what you're expecting:
bytes
/bytes_stream
/chunk
to get the raw datatext
/text_with_charset
to get the data as a stringjson
to deserialize the data into a structured type (see the docs forserde_json
for more info)
In this case it looks like you're getting a JSON payload so using .json()
into a deserializable type sounds like the right way to go, but if your only goal is to print it then .text()
is probably the simpler approach.
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