httpcache | HTTP query cache for R | REST library

 by   nealrichardson R Version: 1.2.0 License: Non-SPDX

kandi X-RAY | httpcache Summary

kandi X-RAY | httpcache Summary

httpcache is a R library typically used in Web Services, REST applications. httpcache has no bugs, it has no vulnerabilities and it has low support. However httpcache has a Non-SPDX License. You can download it from GitHub.

In order to improve performance for HTTP API clients, httpcache provides simple tools for caching and invalidating cache. It includes the HTTP verb functions GET, PUT, PATCH, POST, and DELETE, which are drop-in replacements for those in the httr package. These functions are cache-aware and provide default settings for cache invalidation suitable for RESTful APIs; the package also enables custom cache-management strategies. Finally, httpcache includes a basic logging framework to facilitate the measurement of HTTP request time and cache performance.
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            kandi-support Support

              httpcache has a low active ecosystem.
              It has 12 star(s) with 2 fork(s). There are 1 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 2 open issues and 0 have been closed. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of httpcache is 1.2.0

            kandi-Quality Quality

              httpcache has no bugs reported.

            kandi-Security Security

              httpcache has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              httpcache has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              httpcache releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.

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            httpcache Key Features

            No Key Features are available at this moment for httpcache.

            httpcache Examples and Code Snippets

            No Code Snippets are available at this moment for httpcache.

            Community Discussions

            QUESTION

            Make retrofit fetch new data from server only if localy cached data is older than 5 minutes or it doesn't exist at all
            Asked 2021-May-02 at 21:59

            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 21:59

            Just 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:

            Source https://stackoverflow.com/questions/67360358

            QUESTION

            How can I use scrapy middlewares to call a mail function?
            Asked 2020-Nov-26 at 10:04

            I have 15 spiders and every spider has its own content to send mail. My spiders also have their own spider_closed method which starts the mail sender but all of them same. At some point, the spider count will be 100 and I don't want to use the same functions again and again. Because of that, I try to use middlewares. I have been trying to use the spider_closed method in middlewares but it doesn't work.

            middlewares.py

            ...

            ANSWER

            Answered 2020-Nov-26 at 10:04

            It is important to run spider from scrapy crawl command so it will see whole project configuration correctly. Also, you need to make sure that custom middleware is listed in SPIDER_MIDDLEWARES dict and assigned order number. Main entry point for middleware is from_crawler method, which should receive crawler instance. Then you can write your middleware processing logic here by following rules mentioned here.

            Source https://stackoverflow.com/questions/65017281

            QUESTION

            Scrapy doesn't bring back the elements
            Asked 2020-Nov-22 at 11:47

            The log, I suppose, shows no serious problem, but no elements are scraped. So, I guess the problem might be because of the XPath expressions. But, I double-checked them and simplify them as well as I could. Therefore, I really need help in finding the bugs here.

            Here is the log I got:

            ...

            ANSWER

            Answered 2020-Nov-19 at 16:19

            I recommend to use this expressions for parse_podcast:

            Source https://stackoverflow.com/questions/64909870

            QUESTION

            Scrapy: Unable to understand a log about robots.txt
            Asked 2020-Nov-19 at 07:16

            My question is that if this log means the website cannot be scraped? I changed my user agent to look like a browser but it didn't help. Also, I omitted the "s" inside the "start_requests" but it wasn't helpful either. Even I changes "ROBOTSTXT_OBEY = False" in seetings.py but wasn't helpful.

            Here is the log I got:

            ...

            ANSWER

            Answered 2020-Nov-18 at 14:34

            There is nothing wrong in your execution log.

            Source https://stackoverflow.com/questions/64889114

            QUESTION

            unable to load in-cluster configuration, KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT must be defined
            Asked 2020-Nov-08 at 14:22

            I am working on a dynamic kubernetes informer to watch over my kubernetes cluster for events and the discovery of all kubernetes components.

            But, When I am trying to access the KUBECONFIG via the InClusterConfig method, I am getting the following error:

            ...

            ANSWER

            Answered 2020-Nov-08 at 14:22

            First of all, thanks to @ShudiptaSharma. His comment helped me in figuring out that I was trying to get the cluster config from outside of the cluster which was leading the program on my local machine (127.0.0.1) from where I am not able to access the cluster.

            Further, I tried to figure out how to access the cluster from outside the cluster and found that InClusterConfig is used for running inside cluster use case, when running outside the cluster, something like the following can be used:

            Source https://stackoverflow.com/questions/64613455

            QUESTION

            NGINX SSI with Symfony and PHP-FPM
            Asked 2020-Nov-07 at 17:54

            I need your help with an application that use as technology stack :

            • DOCKER NGINX
            • DOCKER with PHP-FPM and Symfony

            I would like to split the page in different parts and cache some of them because are quite slow to be generated.

            So I try to use SSI ( Server Side Inclue ) as is explaned in the documentation : https://symfony.com/doc/current/http_cache/ssi.html

            This is the configuration of my dockers :

            NGINX :

            ...

            ANSWER

            Answered 2020-Nov-07 at 17:54

            I'm sharing the solution I previously gave you in private, so everybody can have access to it.

            1. First of all, since you are using fastcgi, you must use the fastcgi_cache_* directives,

            for example:

            Source https://stackoverflow.com/questions/64384870

            QUESTION

            Scrapy and invalid cookie found in request
            Asked 2020-Aug-29 at 16:45
            Web Scraping Needs

            To scrape the title of events from the first page on eventbrite link here.

            Approach

            Whilst the page does not have much javascript and the page pagination is simple, grabbing the titles for every event on the page is quite easy and don't have problems with this.

            However I see there's an API which I want to re-engineer the HTTP requests, for efficiency and more structured data.

            Problem

            I'm able to mimic the HTTP request using the requests python package, using the correct headers, cookies and parameters. Unfortunately when I use the same cookies with scrapy it seems to be complaining about three key's in the cookie dictionary that are blank 'mgrefby': '', 'ebEventToTrack': '', 'AN': '',. Despite the fact that they are blank in the HTTP request used with the request package.

            Requests Package Code Example ...

            ANSWER

            Answered 2020-Aug-01 at 22:15

            It looks like they're using not value instead of the more accurate value is not None. Opening an issue is your only long-term recourse, but subclassing the cookie middleware is the short-term, non-hacky fix.

            A hacky fix is to take advantage of the fact that they're not escaping the cookie value correctly when doing the '; '.join() so you can set the cookie's value to a legal cookie directive (I chose HttpOnly since you're not concerned about JS), and cookiejar appears to discard it, yielding the actual value you care about

            Source https://stackoverflow.com/questions/63204521

            QUESTION

            Work-horse process was terminated unexpectedly RQ and Scrapy
            Asked 2020-May-24 at 03:58

            I am trying to retrieve a function from redis (rq), which generate a CrawlerProcess but i'm getting

            Work-horse process was terminated unexpectedly (waitpid returned 11)

            console log:

            Moving job to 'failed' queue (work-horse terminated unexpectedly; waitpid returned 11)

            on the line I marked with comment

            THIS LINE KILL THE PROGRAM

            What am I doing wrong? How I can fix it?

            This function I retrieve well from RQ:

            ...

            ANSWER

            Answered 2018-Jan-29 at 19:05

            The process crashed due to heavy calculations while not having enough memory. Increasing the memory fixed that issue.

            Source https://stackoverflow.com/questions/47154856

            QUESTION

            How to share cookies in Scrapy
            Asked 2020-Apr-15 at 20:20

            I am writing a web scraping program in Scrapy and I need to set it up to share cookies but I am still fairly new to web scraping and Scrapy so I do not know how to do that. I do not know if I need to do something in the settings or maybe a middleware or something else, so any help would be greatly appreciated.

            settings.py

            ...

            ANSWER

            Answered 2020-Apr-15 at 20:20

            If you want to set custom cookies via middlewares try something like this (don't forget to add it to download middlewares).

            Source https://stackoverflow.com/questions/57171803

            QUESTION

            Scraping recursively with scrapy
            Asked 2020-Feb-07 at 17:37

            I'm trying to create a scrapy script with the intent on gaining information on individual posts on the medium website. Now, unfortunately, it requires 3 depths of links. Each year link, and each month within that year and then each day within the months links.

            I've got as far as managing to get each individual link for every year, every month in that year and every day. However I just can't seem to get scrapy to deal with the individual day pages.

            I'm not entirely sure whether I'm confusing using rules and using functions with callbacks to get the links. There isn't much guidance on how to recursively deal with this type of pagination. I've tried using functions and response.follow by itself without being able to get it to run.

            The parse_item function dictionary is required because several articles on the individual day pages have several different ways of classifying the title annoyingly. So i created a function to grab the title regardless of the actual XPATH needed to grab the title.

            The last function get_tag is needed because on each individual article that is where the tags are to grab.

            I'd appreciate any insight into how to get the last step and getting the individual links to go through the parse_item function, the shell o. I should say there are no obvious errors than I can see in the shell.

            Any further information necessary just let me know.

            Thanks!

            CODE:

            ...

            ANSWER

            Answered 2020-Feb-07 at 17:37

            remove the three functions years,months,days

            Source https://stackoverflow.com/questions/60118196

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install httpcache

            Working with httpcache is as simple as loading the package in your interactive session or script instead of httr, or, in package development, importing the HTTP verb functions from httpcache. GET() responses are added to the local query cache; PUT(), PATCH(), POST(), and DELETE() requests trigger cache invalidation on the associated resources. You can override that default cache invalidation, and you can command the invalidation explicitly, with the invalidation functions dropCache(), dropPattern(), and dropOnly(). clearCache() wipes the cache completely. See vignette("httpcache") for examples of the HTTP cache in practice.

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            gh repo clone nealrichardson/httpcache

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