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Why do people say that Ruby is slow? [closed]

...in, Nginx, SQLite, MySQL, PostgreSQL, many parsing libraries, RMagick, TCP/IP, etc are C programs used by Ruby. Ruby provides the glue and the business logic. What are your options as a Ruby programmer if you want to deal with this "slowness"? Switch to a faster language. But that carries...
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What is the X-REQUEST-ID http header?

...up the corresponding log statements (without having to rely on timestamps, IPs, etc). As this ID is generated (randomly) by the client it does not contain any sensitive information, and should thus not violate the user's privacy. As a unique ID is created per request it does also not help with trac...
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How efficient is locking an unlocked mutex? What is the cost of a mutex?

...ens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking. How efficient is it to lock a mutex? I.e. how much assembler instructions are there likely and how much time do they take (in the case that the mutex...
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How to post pictures to instagram using API

...s request.")) { echo "Request failed, there's a chance that this proxy/ip is blocked"; } else { if(empty($login[1])) { echo "Empty response received from the server while trying to login"; } else { // Decode the array that is returned $obj ...
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What are the differences between WCF and ASMX web services?

...a console app - you have total freedom used with HTTP (REST and SOAP), TCP/IP, MSMQ and many more protocols In short: WCF is here to replace ASMX fully. Check out the WCF Developer Center on MSDN. Update: link seems to be dead - try this: What Is Windows Communication Foundation? ...
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MQTT物联网协议完全实践指南 · App Inventor 2 中文网

... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
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What exactly is OAuth (Open Authorization)?

... yeah You can use the IP Address as the redirect URL: redirect_uri='127.0.0.1:4200' and the OAuth Domain name should be 127.0.0.1 – Samson Maben Aug 17 '17 at 10:48 ...
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Amazon S3 direct file upload from client browser - private key disclosure

...ile upload from client machine to Amazon S3 via REST API using only JavaScript, without any server-side code. All works fine but one thing is worrying me... ...
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How to choose the id generation strategy when using JPA and Hibernate

... generate identifiers of type string that are unique within a network (the IP address is used). The UUID is encoded as a string of 32 hexadecimal digits in length. guid uses a database-generated GUID string on MS SQL Server and MySQL. native selects identity, sequence or hilo depending upon the capa...
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Cannot push to Git repository on Bitbucket

...penSSH_4.6p1, OpenSSL... See something like that? Yes: Continue. No: Skip to the FOR THE LAZY section or follow the linked article from VonC. See if you have generated the keys already: $ ls -a ~/.ssh/id_* If there are two files, you can skip the next step. $ ssh-keygen Leave everything ...