Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.
Terminology:
| # Encoding file | |
| perl -MMIME::Base64 -0777 -ne 'print encode_base64($_)' < file | |
| # Decoding file | |
| perl -MMIME::Base64 -ne 'print decode_base64($_)' < file.b64 |
| # reference https://bitbucket.org/xuxiaodong/dotman/src/cb7f1e6fb338/.tmux.conf | |
| set -g default-terminal "screen-256color" | |
| set -g display-time 3000 | |
| set -g history-limit 65535 | |
| set -g base-index 1 | |
| set -g pane-base-index 1 | |
| set -s escape-time 0 | |
| # key bindings |
| SQL*Plus: Release 10.2.0.3.0 - Production on Fri May 30 10:20:33 2008 | |
| Copyright (c) 1982, 2006, Oracle. All Rights Reserved. | |
| SQL> conn /as sysdba | |
| ERROR: | |
| ORA-12162: TNS:net service name is incorrectly specified | |
| 以上问题基本上有三种原因造成 |
| in progress (#1046): re-focus this page on deployment of python on linux, esp. suse; perhaps move to PythonDeployment?. for developer set-up, see WritingQualityCode | |
| virtualenv is a tool to create isolated Python environments: | |
| The basic problem being addressed is one of dependencies and versions, and indirectly permissions. Imagine you have an application that needs version 1 of LibFoo , but another application requires version 2. How can you use both these applications? Or what if you want to install an application and leave it be ? If an application works, any change in its libraries or the versions of those libraries can break the application. ... In all these cases, virtualenv can help you. | |
| Machine Set-Up | |
| If your development machine runs ubuntu (or debian) linux, install with apt-get: |
| /etc/init.d/apache2 restart | |
| /etc/init.d/mysql start | |
| /etc/init.d/apache2 restart | |
| /etc/init.d/mysql restart | |
| 开机自启动 | |
| ======== |
| # Doxyfile 1.6.1 | |
| # This file describes the settings to be used by the documentation system | |
| # doxygen (www.doxygen.org) for a project | |
| # | |
| # All text after a hash (#) is considered a comment and will be ignored | |
| # The format is: | |
| # TAG = value [value, ...] | |
| # For lists items can also be appended using: | |
| # TAG += value [value, ...] |
| bool is_number(const std::string& s) | |
| { | |
| std::string::const_iterator it = s.begin(); | |
| while (it != s.end() && std::isdigit(*it)) ++it; | |
| return !s.empty() && it == s.end(); | |
| } |
| 可能的依赖 | |
| gun) | |
| m4 | |
| Bison |
| curl -r 0-209715200 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part1 & | |
| curl -r 209715200-419430400 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part2 & | |
| curl -r 419430400-629145600 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part3 & | |
| curl -r 629145600-838860800 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part4 & | |
| curl -r 838860800-1048576000 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part4 & | |
| curl -r 1048576000-1258291200 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part5 & | |
| curl -r 1258291200-1468006400 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part6 & | |
| curl -r 1468006400-1677721600 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part7 & | |
| curl -r 1677721600-1887436800 http://get-software.net/systems/texlive/Images/texlive2012.iso > texlive.part8 |