gzip | Gin middleware to enable GZIP support | Web Framework library
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Gin middleware to enable GZIP support.
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QUESTION
I need help debugging Webpack's Compression Plugin.
SUMMARY OF PROBLEM
- Goal is to enable asset compression and reduce my app's bundle size. Using the Brotli algorithm as the default, and gzip as a fallback for unsupported browsers.
- I expected a content-encoding field within an asset's Response Headers. Instead, they're loaded without the field. I used the Chrome dev tools' network tab to confirm this. For context, see the following snippet:
- No errors show in my browser or IDE when running locally.
WHAT I TRIED
- Using different implementations for the compression plugin. See below list of approaches:
- (With Webpack Chain API)
ANSWER
Answered 2021-Sep-30 at 14:59It's not clear which server is serving up these assets. If it's Express, looking at the screenshot with the header X-Powered-By
, https://github.com/expressjs/compression/issues/71 shows that Brotli support hasn't been added to Express yet.
There might be a way to just specify the header for content-encoding
manually though.
QUESTION
I'm scratching my head because I ran npm i swiper
and read through the Swiper Vue docs and it says to import { Swiper, SwiperSlide } from 'swiper/vue
which I've done and I even get the bundle size showing 95.4K (gzipped: 28.9K)
.
When I run npm run serve
I then get this error
ANSWER
Answered 2021-Oct-03 at 03:08If you're using the swiper version 7* then you could face this type of issue.
Try downgrading to the v6.7.5 , see if that helps.
QUESTION
I want to download/scrape 50 million log records from a site. Instead of downloading 50 million in one go, I was trying to download it in parts like 10 million at a time using the following code but it's only handling 20,000 at a time (more than that throws an error) so it becomes time-consuming to download that much data. Currently, it takes 3-4 mins to download 20,000 records with the speed of 100%|██████████| 20000/20000 [03:48<00:00, 87.41it/s]
so how to speed it up?
ANSWER
Answered 2022-Feb-27 at 14:37If it's not the bandwidth that limits you (but I cannot check this), there is a solution less complicated than the celery and rabbitmq but it is not as scalable as the celery and rabbitmq, it will be limited by your number of CPU.
Instead of splitting calls on celery workers, you split them on multiple processes.
I modified the fetch
function like this:
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
Question in short
I have migrated my project from Django 2.2 to Django 3.2, and now I want to start using the possibility for asynchronous views. I have created an async view, setup asgi configuration, and run gunicorn with a Uvicorn worker. When swarming this server with 10 users concurrently, they are served synchronously. What do I need to configure in order to serve 10 concurrent users an async view?
Question in detail
This is what I did so far in my local environment:
- I am working with Django 3.2.10 and Python 3.9.
- I have installed
gunicorn
anduvicorn
through pip - I have created an
asgi.py
file with the following contents
ANSWER
Answered 2022-Feb-06 at 21:43When running the gunicorn
command, you can try to add workers
parameter with using options -w
or --workers
.
It defaults to 1
as stated in the gunicorn documentation. You may want to try to increase that value.
Example usage:
QUESTION
I have to decompress some gzip text in .NET 6 app, however, on a string that is 20,627 characters long, it only decompresses about 1/3 of it. The code I am using code works for this string in .NET 5 or .NETCore 3.1 As well as smaller compressed strings.
...ANSWER
Answered 2022-Feb-01 at 10:43Just confirmed that the article linked in the comments below the question contains a valid clue on the issue.
Corrected code would be:
QUESTION
Scenario
For a map tiling project (think google earth) I have a .mbtile
file that I know nothing about other than it has a lot of data about cities on the planet. I've been picking at it for a couple days and have found out the following:
- the file is a sqlite database
- the database has a table
tiles
which is full of blobs - the blobs are binary with gzip signatures
- after unzipping, the result is a protocol buffer
I haven't worked with protobuf much so I'm getting a crash course. I took the unzipped binary and with protoc --decode_raw
received the following
ANSWER
Answered 2022-Jan-18 at 16:12working c# protobuf contracts thx to @MarcGravell
QUESTION
When I try to run command ng lint --fix
cli throws this error:
ANSWER
Answered 2021-Nov-28 at 10:34From v13 angular doesn't use tslint
anymore due to deprecation.
Run ng add @angular-eslint/schematics
to add eslint
to your application.
It will use tslint-to-eslint-config to migrate you to eslint
automatically.
It will generate a .eslintrc.json
file and migrate tslint.json
to it.
Nothing else is needed to be done.
QUESTION
I use a HttpClient
to communicate with my server as shown below:
ANSWER
Answered 2021-Dec-23 at 15:06This is a long-standing issue #6351 in Xamarin.Android, caused by LetsEncrypt's root expiring and them moving to a new root.
Below is a copy of my post in that issue explaining the situation and the workarounds. See other posts in that thread for details on the workarounds.
Scott Helme has a fantastic write-up of the situation. Go and read that first, then I'll describe how (I think) this applies to xamarin-android.
I'm going to copy the key diagram from that article (source):
The red chain is what used to happen: the IdenTrust DST Root CA X3 is an old root certificate which is trusted pretty much everywhere, including on Android devices from 2.3.6 onwards. This is what LetsEncrypt used to use as their root, and it meant that everyone trusted them. However, this IdenTrust DST Root CA X3 recently expired, which means that a bunch of devices won't trust anything signed by it. LetsEncrypt needed to move to their own root certificate.
The blue chain is the ideal new one -- the ISRG Root X1 is LetsEncrypt's own root certificate, which is included on Android 7.1.1+. Android devices >= 7.1.1 will trust certificates which have been signed by this ISRG Root X1.
However, the problem is that old pre-7.1.1 Android devices don't know about ISRG Root X1, and don't trust this.
The workaround which LetsEncrypt is using is that old Android devices don't check whether the root certificate has expired. They therefore by default serve a chain which includes LetsEncrypt's root ISRG Root X1 certificate (which up-to-date devices trust), but also include a signature from that now-expired IdenTrust DST Root CA X3. This means that old Android devices trust the chain (as they trust the IdenTrust DST Root CA X3, and don't check whether it's expired), and newer devices also trust the chain (as they're able to work out that even though the root of the chain has expired, they still trust that middle ISRG Root X1 certificate as a valid root in its own right, and therefore trust it).
This is the green path, the one which LetsEncrypt currently serves by default.
However, the BoringSSL library used by xamarin-android isn't Android's SSL library. It 1) Doesn't trust the IdenTrust DST Root CA X3 because it's expired, and 2) Isn't smart enough to figure out that it does trust the ISRG Root X1 which is also in the chain. So if you serve the green chain in the image above, it doesn't trust it. Gack.
The options therefore are:
- Don't use BoringSSL and do use Android's SSL library. This means that xamarin-android behaves the same as other Android apps, and trusts the expired root. This is done by using
AndroidClientHandler
as described previously. This should fix Android >= 2.3.6. - Do use BoringSSL but remove the expired IdenTrust DST Root CA X3 from Android's trust store ("Digital Signature Trust Co. - DST Root CA X3" in the settings). This tricks BoringSSL into stopping its chain at the ISRG Root X1, which it trusts (on Android 7.1.1+). However this will only work on Android devices which trust the ISRG Root X1, which is 7.1.1+.
- Do use BoringSSL, and change your server to serve a chain which roots in the ISRG Root X1, rather than the expired IdenTrust DST Root CA X3 (the blue chain in the image above), using
--preferred-chain "ISRG Root X1"
. This means that BoringSSL ignores the IdenTrust DST Root CA X3 entirely, and roots to the ISRG Root X1. This again will only work on Android devices which trust the ISRG Root X1, i.e. 7.1.1+. - Do the same as 3, but by manually editing fullchain.pem.
- Use another CA such as ZeroSSL, which uses a root which is trusted back to Android 2.2, and which won't expire until 2038.
QUESTION
Im currently adding pwa to my new angular project.
C:\Users\alan_yu\angular-pwa>http-server -p 8080 -c-1 dist/angular-pwa
...ANSWER
Answered 2021-Dec-08 at 06:42stream.Readable.from
function added in: node v12.3.0, v10.17.0
After updating node from V12.2.0 to v13.13.0 (at least v12.3.0), the http-server works well.
Ref: Node.js doc
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