Rocks

Gui viewer for RocksDb sst files

房东的猫 提交于 2019-12-10 11:28:07
问题 I'm working with Kafka that save the data into rocksdb. Now I want to have a look at the db keys and values that created by Kafka. I downloaded FastNoSQL and tried but failed. The folder contains: .sst files .log files CURRENT file IDENTITY file LOCK file LOG files MANIFEST files OPTIONS files How can I watch the values? 回答1: Keylord (since version 5.0) can open RocksDB databases. For example here is Kafka stream of Wordcount application: 回答2: For RocksDB db files you can use FastoNoSql. 回答3:

Gui viewer for RocksDb sst files

ε祈祈猫儿з 提交于 2019-12-06 07:03:20
I'm working with Kafka that save the data into rocksdb. Now I want to have a look at the db keys and values that created by Kafka. I downloaded FastNoSQL and tried but failed. The folder contains: .sst files .log files CURRENT file IDENTITY file LOCK file LOG files MANIFEST files OPTIONS files How can I watch the values? Keylord (since version 5.0) can open RocksDB databases. For example here is Kafka stream of Wordcount application : For RocksDB db files you can use FastoNoSql . It looks like the reason you have data stored in RocksDB files is because you are using Apache Kafka's Streams API.

【Ajax】----你真的会使用XMLHttpRequest吗?

人盡茶涼 提交于 2019-12-02 06:46:39
看到标题时,有些同学可能会想:“我已经用 xhr 成功地发过很多个 Ajax 请求了,对它的基本操作已经算挺熟练了。” 我之前的想法和你们一样,直到最近我使用 xhr 时踩了不少坑儿,我才突然发现其实自己并不够了解 xhr ,我知道的只是最最基本的使用。 于是我决定好好地研究一番 xhr 的真面目,可拜读了不少博客后都不甚满意,于是我决定认真阅读一遍W3C的 XMLHttpRequest 标准。看完标准后我如同醍醐灌顶一般,感觉到了从未有过的清澈。这篇文章就是参考W3C的 XMLHttpRequest 标准和结合一些实践验证总结而来的。 Ajax 和 XMLHttpRequest 我们通常将 Ajax 等同于 XMLHttpRequest ,但细究起来它们两个是属于不同维度的2个概念。 以下是我认为对 Ajax 较为准确的解释:(摘自 what is Ajax ) AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS, and Java Script. AJAX is based on the

yum install texinfo on CentOS 6.6 (no package)

微笑、不失礼 提交于 2019-12-02 05:29:30
问题 To resolve some dependency to one of my programs, I have to install texinfo on my centos 6.6 system yum install texinfo it resulted to Setting up Install Process No package texinfo available Error: Nothing to do I don't know how to resolve this. So far, I've downloaded that binary rpm. Can anyone point me to the right direction ? 回答1: texinfo is provided by the BASE repo. Available Packages Name : texinfo Arch : x86_64 Version : 4.13a Release : 8.el6 Size : 668 k Repo : base Summary : Tools

yum install texinfo on CentOS 6.6 (no package)

主宰稳场 提交于 2019-12-02 00:16:12
To resolve some dependency to one of my programs, I have to install texinfo on my centos 6.6 system yum install texinfo it resulted to Setting up Install Process No package texinfo available Error: Nothing to do I don't know how to resolve this. So far, I've downloaded that binary rpm. Can anyone point me to the right direction ? texinfo is provided by the BASE repo. Available Packages Name : texinfo Arch : x86_64 Version : 4.13a Release : 8.el6 Size : 668 k Repo : base Summary : Tools needed to create Texinfo format documentation files URL : http://www.gnu.org/software/texinfo/ License :

PostgreSQL rocks, except when it blocks: Understanding locks

六月ゝ 毕业季﹏ 提交于 2019-12-01 07:41:31
At Citus Data , we engineers take an active role in helping our customers scale out their Postgres database, be it for migrating an existing application or building a new application from scratch . This means we help you with distributing your relational data model—and also with getting the most out of Postgres. One problem I often see users struggle with when it comes to Postgres is locks. While Postgres is amazing at running multiple operations at the same time, there are a few cases in which Postgres needs to block an operation using a lock. You therefore have to be careful about which

转:XMLHttpRequest2 新技巧

家住魔仙堡 提交于 2019-12-01 02:41:27
”XMLHttpRequest 的异步调用网上找的例子运行没问题,但稍微改了一点点就报错”InvalidStateError: XMLHttpRequest has an invalid context“。断断续续 搞了3天终于通了,可以接收二进制文件了。 “ 之后找到了下篇文章,发现我所使用的方法是下方中的老方法。准备再按下文所说新方法试试。 下文是2011写的了,想必所说内容到现在已是所有浏览器都支持的了吧。 以下转自: https://www.html5rocks.com/zh/tutorials/file/xhr2/。 XMLHttpRequest2 新技巧 HTML5 Rocks 目录 简介 抓取数据 发送数据 跨源资源共享 (CORS) 实际示例: 参考 By Eric Bidelman 已发布: 五月 27th, 2011 Comments: 0 简介 HTML5 世界中有这样一位无名英雄: XMLHttpRequest 。严格地说,XHR2 并不属于 HTML5。不过,它是浏览器供应商对于核心平台不断做出的改进中的一部分。我之所以将 XHR2 加入我们新的百宝囊中,就是因为它在如今复杂的网络应用中扮演了不可或缺的角色。 结果呢,我们这位老朋友来了个大变身,很多人都不知道它的新功能了。 2 级 XMLHttpRequest 引入了大量的新功能(例如跨源请求

Groovy中 Base64 URL和文件名安全编码

喜欢而已 提交于 2019-11-27 21:18:55
Base64 URL和文件名安全编码 Groovy支持Base64编码 很长一段时间 。 从Groovy 2.5.0开始,我们还可以使用Base64 URL和Filename Safe编码来使用 encodeBase64Url 方法对字节数组进行编码。 结果是一个 Writable 对象。 我们可以在 Writable 对象上调用 toString 方法来获得 String 值。 可以使用添加到 String 类的 decodeBase64Url 方法使用相同的编码对编码的 String 值进行解码。 在下面的示例Groovy代码中,我们对字节数组进行编码和解码: import static java.nio.charset.StandardCharsets.UTF_8 def message = 'Groovy rocks!' // Get bytes array for String using UTF8. def messageBytes = message.getBytes(UTF_8) // Encode using Base64 URL and Filename encoding. def messageBase64Url = messageBytes.encodeBase64Url().toString() // Encode using Base64 URL and