rack | A modular Ruby web server interface

 by   rack Ruby Version: v2.2.7 License: Non-SPDX

kandi X-RAY | rack Summary

kandi X-RAY | rack Summary

rack is a Ruby library. rack has no bugs, it has no vulnerabilities and it has medium support. However rack has a Non-SPDX License. You can download it from GitHub.

A modular Ruby web server interface.

            kandi-support Support

              rack has a medium active ecosystem.
              It has 4679 star(s) with 1692 fork(s). There are 163 watchers for this library.
              There were 7 major release(s) in the last 12 months.
              There are 10 open issues and 673 have been closed. On average issues are closed in 64 days. There are 6 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of rack is v2.2.7

            kandi-Quality Quality

              rack has 0 bugs and 356 code smells.

            kandi-Security Security

              rack has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              rack code analysis shows 0 unresolved vulnerabilities.
              There are 61 security hotspots that need review.

            kandi-License License

              rack 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

              rack releases are available to install and integrate.
              rack saves you 7799 person hours of effort in developing the same functionality from scratch.
              It has 16070 lines of code, 937 functions and 129 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed rack and discovered the below as its top functions. This is intended to give you an instant insight into rack implemented functionality, and help decide if they suit your requirements.
            • Validate environment variables .
            • Searches the response .
            • Ensures the given block .
            • Starts the application .
            • Checks whether the response is received .
            • Normalizes a hash value .
            • Adds the cookie to the set .
            • Creates a Rack application .
            • Check HTTP headers .
            • Renders the exception backtrace .
            Get all kandi verified functions for this library.

            rack Key Features

            No Key Features are available at this moment for rack.

            rack Examples and Code Snippets

            Combine rack trace .
            javadot img1Lines of Code : 4dot img1no licencesLicense : No License
            copy iconCopy
            public static List> combine(int n, int k) {
                    brackTrace(n, k, 1, new LinkedList<>());
                    return output;

            Community Discussions


            updating to rails 6, but "activerecord-session_store (~> 2.0) was resolved to 2.0.0, which depends on actionpack (>="
            Asked 2021-Jun-14 at 23:35

            I ran bundle update rails and got this. I'm stumped. If activerecord-session_store 2.0 depends on a version of actionpack between and above, and if actionpack is a dependency of Rails 6, shouldn't this be ok?



            Answered 2021-Jun-14 at 23:35

            Hmm; if I try bundle install with your Gemfile I get

            Source https://stackoverflow.com/questions/67977850


            cassandra 3.11.9 system_auth need to be SimpleStrategy or NetworkTopologyStrategy on production env?
            Asked 2021-Jun-14 at 02:52

            What is the recommended for cassandra (apache) 3.11.9 system_auth? need to be SimpleStrategy or NetworkTopologyStrategy? And with how much RF?

            We have cassandra with 1 dc (2-3 AWS racks with EC2_snitch + dynamic_snitch disabled). Most queries running on consistency level local_one). Today our system_auth keyspace configured SimpleStrategy with RF 3. In a lot of queries, we are wasting time on (tracing):



            Answered 2021-Jun-14 at 02:51

            I answered this question a while ago, which is similar: Replication Factor to use for system_auth

            Due to issues that can happen with larger clusters which fluctuate in size, we now treat system_auth like we do any other keyspace. That is, we set system_auth's RF to 3 in each DC.

            tl;dr;, if you're using NetworkTopologyStrategy on your non-system keyspaces, then you should also be using it for system_auth. Same with your RF; I'd always match the RF of system_auth with that of my "normal" keyspaces, as well.

            No, the replication strategy and RF used on system_auth does not typically cause query latency. That is of course, unless any of the Security cache settings have been altered. 10 years of working with Cassandra, I've never had to change those: https://docs.datastax.com/en/security/5.1/security/secAuthCacheSettings.html

            queries wasting time on (tracing): "Executing single-partition query on roles [ReadStage-X]"

            This statement got me thinking: Are you tracing queries in cqlsh while logged in as the default cassandra user? That user does trigger some cqlsh operations to execute at QUORUM. Could also be that maybe the query consistency and connection consistency are set differently. Just a thought.

            Source https://stackoverflow.com/questions/67962399


            Spring Boot application reads same messages from Kafka whenever started
            Asked 2021-Jun-11 at 16:12

            I have Zookeeper and Apache Kafka servers running on my Windows computer. The problem is with a Spring Boot application: it reads the same messages from Kafka whenever I start it. It means the offset is not being saved. How do I fix it?

            Versions are: kafka_2.12-2.4.0, Spring Boot 2.5.0.

            In Kafka listener bean, I have



            Answered 2021-Jun-10 at 15:19

            Your issue is here enable.auto.commit = false. If you are not manually committing offset after consuming messages, You should configure this to true

            If this is set to false, after consuming messages from Kafka, there is no feedback to Kafka whether you read or not. Then after you restart your consumer it will send messages from the start. If you enable this, your consumer make sure it will automatically send your last read offset to Kafka. Then Kafka saved that offset in __consumer_offsets topic with your consumer group_id, topic you consumed and partition.

            Then after you restart the consumer, Kafka read your last position from __consumer_offsets topic and send from there.

            Source https://stackoverflow.com/questions/67921796


            Is there a better way to write this javascript? They are essentially show/hide functions (in 3 different ways)
            Asked 2021-Jun-11 at 02:23

            I'm still learning javascript, and I'm using three sets of code - but it seems like there could be a better way to write them.

            Set one:



            Answered 2021-Jun-11 at 02:23
            You want automagic behavior for a custom microformat

            Let's look at one section of the first pattern:

            Source https://stackoverflow.com/questions/67930209


            Bootstrap broker not being used to consume from topic
            Asked 2021-Jun-10 at 17:33

            A simple spring-boot-kafka which consumes from a topic on a network cluster:


            Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected

            Connection to node -1 (localhost/ could not be established. Broker may not be available.


            The configured broker is not local, it's BROKER_1.FOO.NET:9094, and it is available.




            Answered 2021-Jun-10 at 17:33

            it's BROKER_1.FOO.NET:9094, and it is available.

            The bootstrap port may be available and responding to requests, but that broker then returned it's configured advertised.listeners.

            Based on your error, either

            1. that's set to be localhost/
            2. or you're getting the default Spring property for the bootstrap servers config

            Source https://stackoverflow.com/questions/67880068


            "Precompiling assets failed" error when pushing to heroku
            Asked 2021-Jun-10 at 07:21

            Looked through past posts on SO but couldn't find the solution.


            1. Mac OS Big Sur
            2. Rails
            3. ruby 3.0.1p64

            Github repo https://github.com/tenzan/ruby-bootcamp

            Added Bootsrtap 5 according to https://blog.corsego.com/rails-6-install-bootstrap-with-webpacker-tldr

            To push to heroku I ran git push heroku main




            Answered 2021-Jun-10 at 00:32

            ModuleNotFoundError: Module not found: Error: Can't resolve '@popperjs/core' suggests that you need to install @popperjs/core.

            Source https://stackoverflow.com/questions/67912854


            How to remap coc.nvim autocomplete key?
            Asked 2021-Jun-09 at 22:06

            I was trying to change my coc.nvim autocomplete key, and found this question in Stack Overflow, but the guy who answer this question doesn't explain really good how to customize it as you want, so I will explain it to help the NeoVim users that are racking the brain for this as I was.



            Answered 2021-May-03 at 14:20
            Short Answer

            If you want to bind Tab for autocompletion, paste this in your .vimrc or init.vim

            Source https://stackoverflow.com/questions/67370086


            Python Pandas if df1.col starts with(string), create df2.col with that string?
            Asked 2021-Jun-09 at 16:09

            I have a data export from a rack management software that I need to manipulate and load to a new system.

            In the current export (df1) I have a column that includes the acronym of one of the data centers. That is: column "Region" with values in the format "DC_Rack_01".

            I created an empty data frame (df2) that I will eventually import into the new system. This df2 will be populated with data from df1 but the fields do not match 1:1. This new data frame (df2) must have a column "site" which must have the acronym "DC" in it (or whatever the name of the other data centers are). I am thinking to do something as stated in the post question (I hope it's not too confusing):

            if df1.region starts with("DC"), use "DC" to populate column df2.site

            I tried the following code but it returns a boolean True/False, but I want the actual string "DC".



            Answered 2021-Jun-09 at 15:30

            supposing the 'Site_acronym' is always the first two letters from the column 'region' you can try:

            Source https://stackoverflow.com/questions/67906432


            Are CASE statements or OR statements faster in a WHERE clause? (SQL/BigQuery)
            Asked 2021-Jun-08 at 16:09

            I'm trying to get some insight in this room for optimization for a SQL query (BigQuery). I have this segment of a WHERE clause that needs to include all instances where h.isEntrance is TRUE or where h.hitNumber = 1. I've tested it back and forth with CASE statements, and with OR statements for them, and the results aren't wholly conclusive.

            It seems like the CASE is faster for shorter data pulls, and the OR is faster for longer data pulls, but that doesn't make sense to me. Is there a difference between these or is it likely something else driving this difference? Is one faster/is there another better option for incorporating this logical requirement into my query? Below the statement is my full query for context in case that's helpful.

            Also open to any other optimizations I may have overlooked within this query as lowering the runtime for this query is paramount to its usefulness.




            Answered 2021-Jun-08 at 15:46

            From a code craft viewpoint alone, I would probably always write your CASE expression as this:

            Source https://stackoverflow.com/questions/67890230


            Siemens LOGO! PLC data in the wrong order
            Asked 2021-Jun-07 at 13:29

            So I'm accessing an Siemens LOGO! PLC to extract some data from. I managed to do that with my work partner but we're stuck on how the data is being saved. The data is being timestamped in a dictionary with the output and input bytes from the PLC. But the data comes in a certain order and is timestamped the moment the data is extracted.

            Now the problem is that the timestamps and data isn't saved in the same order that the data comes in. Somewhere in the process it makes a mistake (I think), but we can't seem to find it.

            Here's the Python Code we use: ...


            Answered 2021-Jun-07 at 13:29

            I found out why it was so duplicating the data packets. Because the dict data is defined outside the while loop it keeps adding new keys,values to the dict. The dict is being wrapped into a json file and keeps getting exponentially increasing.

            The dict data needs to be defined inside the while loop so that it can be reused every time it dumps the dict into the json.

            Source https://stackoverflow.com/questions/67819625

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


            No vulnerabilities reported

            Install rack

            You can download it from GitHub.
            On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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