httpcache | working HTTP Cache in Go with only 3 lines | HTTP library
kandi X-RAY | httpcache Summary
kandi X-RAY | httpcache Summary
You can disable/enable the RFC Compliance as you want. If RFC 7234 is too complex for you, you can just disable it by set the RFCCompliance parameter to false. The downside of disabling the RFC Compliance, All the response/request will be cached automatically. Do with caution.
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Top functions reviewed by kandi - BETA
- CachableObject caches the result of the object .
- UsingRequestResponseWithObject parses the HTTP response headers and returns the parsed reason and object .
- parse parses a string into the cache .
- ExpirationObject calculates the expiration time for an object .
- validate the cache control header
- CachableStatusCode returns true if the HTTP status code is cacheable .
- httpUnquote unquotes the raw string and returns the remaining bytes .
- getCachedResponse gets the HTTP response from the cache
- httpUnquotePair converts a byte to a byte .
- hasFreshness returns true if the request has freshness
httpcache Key Features
httpcache Examples and Code Snippets
Lines of Code : 27License : Permissive (MIT)
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// Inject the HTTP Client with httpcache
client := &http.Client{}
_, err := httpcache.NewWithInmemoryCache(client, true, time.Second*60)
if err != nil {
log.Fatal(err)
}
// And your HTTP Client already supported for HTTP Cache
// To verify y client := &http.Client{}
_, err := httpcache.NewWithCustomStorageCache(client,true, mystorage.NewCustomInMemStorage())
if err != nil {
log.Fatal(err)
}
_, err := httpcache.NewWithInmemoryCache(client, false, time.Second*60)
// or
_, err := httpcache.NewWithCustomStorageCache(client,false, mystorage.NewCustomInMemStorage())
Community Discussions
Trending Discussions on httpcache
QUESTION
I have a problem with a very simple custom spider, but I can't figure it out. Scrapy is redirected to the consent.yahoo page when trying to scrape a page on yahoo finance.
The spider looks like this:
...ANSWER
Answered 2022-Feb-01 at 19:27The issue is that you need to include the cookies into the start_requests, and then there is the issue in how you're indexing the values. It's better to yield the data with scrapy as opposed to print. You also did not need span in your xpath for the prices.
Here's a working solution:
QUESTION
We want to display customer (actually customer-group) specific information on product detail pages in Shopware 6.
There seems to be the HTTP cache and we are afraid that the page would be cached if a specific customer group displays the page and the information would be leaked to non-customers.
Is this assumption correct?
The documentation does not reveal much information about this.
Is there a way to set specific cache tags, so that the information is only displayed to the correct customer group?
Or do we need to fetch the data dynamically via AJAX?
Bonus question: Can the HTTP cache be simulated in automatic tests to ensure the functionality works?
What I found out so far:
The is annotation
@httpCachefor controller, which seems to control whether a page is cached or notThe cache key is generated in
\Shopware\Storefront\Framework\Cache\HttpCacheKeyGenerator::generate. It take the full request URI into account, and somecacheHashwhich is injected. I believe it would not take the customer group into accountMaybe this
generate()method could be decorated, but I am not sure if that is the right way.There is a cookie being set
sw-cache-hashwhich influences the caching. It takes the customer into account.
...sw-cache-hashis created here:
ANSWER
Answered 2022-Jan-28 at 10:51As you can see in the last code snippet, it takes into account the active Rule ids. This means that if you create a rule (through Settings > Rule Builder) that is active on a certain group, but not on another or no group, it will be taken into account & create a different cache hash for the different customer groups.
QUESTION
I am trying to implement a HTTP cache invalidation with API Platform and AWS CloudFront and as I can read in API Platform documentation:
Support for reverse proxies other than Varnish can easily be added by implementing the
ApiPlatform\Core\HttpCache\PurgerInterface
I have coded an implementation but now I can not make the built-in cache invalidation system -should be the event listener ApiPlatform\Core\Bridge\Doctrine\EventListener\PurgeHttpCacheListener- it just keep injecting the ApiPlatform\Core\HttpCache\VarnishPurger instead.
What I did basically, in config/services.yml -having autowire enabled:
ANSWER
Answered 2021-Dec-23 at 14:43Alright! Found the issue. PurgeHttpCacheListener is using a service ID so it cannot be autowired according to the Symfony docs.
From vendor/api-platform/core/src/Bridge/Symfony/Bundle/Resources/config/doctrine_orm_http_cache_purger.xml:
QUESTION
Here are my spider code and the log I got. The problem is the spider seems to stop scraping items addressed from somewhere in the midst of page 10 (while there are 352 pages to be scraped). When I check the XPath expressions of the rest of the elements, I find them the same in my browser.
Here is my spider:
...ANSWER
Answered 2021-Dec-04 at 11:41Your code is working fine as your expectation and the problem was in pagination portion and I've made the pagination in start_urls which type of pagination is always accurate and more than two times faster than if next page.
CodeQUESTION
So I've tried several things to understand why my spider is failing, but haven't suceeded. I've been stuck for days now and can't afford to keep putting this off any longer. I just want to scrape the very first page, not doing pagination at this time. I'd highly appreciate your help :( This is my code:
...ANSWER
Answered 2021-Nov-03 at 19:42I think your error is that you are trying to parse instead of starting the requests.
Change:
QUESTION
I am trying to scrape content from a website using Scrapy CrawlSpider Class but I am blocked by the below response. I guess the above error has got to do with the User-Agent of my Crawler. So I had to add a custom Middleware user Agent, but the response still persist. Please I need your help, suggestions on how to resolve this.
I didn't consider using splash because the content and links to be scraped don't have a javascript extension.
My Scrapy spider class:
...ANSWER
Answered 2021-Sep-24 at 11:19The major hindrance is allowed_domains. You must have to take care on it, otherwise Crawlspider fails to produce desired output and another reason may arise to for // at the end of start_urls so you should use / and instead of allowed_domains = ['thegreyhoundrecorder.com.au/form-guides/']
You have to only domain name like as follows:
QUESTION
I am trying to get scrapy-selenium to navigate a url while picking some data along the way. Problem is that it seems to be filtering out too much data. I am confident there is not that much data in there. My problem is I do not know where to apply dont_filter=True.
This is my code
ANSWER
Answered 2021-Sep-11 at 09:59I run your code on a clean, virtual environment and it is working as intended. It doesn't give me a KeyError either but has some problems on various xpath paths. I'm not quite sure what you mean by filtering out too much data but your code hands me this output:
You can fix the text errors (on product category, part number and description) by changing xpath variables like this:
QUESTION
Im trying to scrape this website https://www.vivareal.com.br/aluguel/sp/sao-jose-dos-campos/apartamento_residencial/. Its a real state site, but for same reason when starts to change the pages only gets the same data, i really dont know whats going on. Could someone help me, please?
init.py
...ANSWER
Answered 2021-Aug-21 at 06:55The pagination relies on javascript. Scrapy behaves similarly to other http clients like requests, httpx. It doesn't support javascript. You have to need intercept the request and handle it by some browsers like headless Chrome, Splash. Considering the compatibility, the best solution is to use a headless Chrome browser and control it by scrapy-playwright.
Other choices you should avoid
- scrapy-splash. Splash is maintained by Scrapy organization. But this lightweight browser uses the Webkit engine, which behaves differently with popular browser like Firefox, Chrome. A lot of sites are not properly rendered with Splash.
- scrapy-selenium or scrapy-headless.
- these plugins use Selenium, which is synchronous.
- these plugins created custom
Requestand code the pickling wrongly. The customRequestget broken after popped up from the Scrapy's internal queue.
QUESTION
I'm trying to scrape this website www.zillow.com by using Scrapy. I'm trying to import addresses from a CSV file and trying to search by it. But getting error. Here is my code.
csv_read.py ...ANSWER
Answered 2021-Aug-16 at 16:56It's the response parsing methond, your should use response.xpath() but not response.body
QUESTION
I have to make my retrofit client fetch new data from the server only if the locally cached data is older than 5 minutes or if it doesn't exist
...ANSWER
Answered 2021-May-02 at 21:59Just save your cache in room/sqlite/file and save last update date in shared preferences. Create the repository class with local and remote data sources. Fetch the data from the local data source if last update date is less than 5 minutes, otherwise fetch it from remote source.
Or you can try to use okhttp capabilities: you need cache interceptor like this:
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