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原创 从架构上详解技术(SLB,Redis,Mysql,Kafka,Clickhouse)的各类热点问题

什么是热点问题?在我们生活中,定义是:比较受广大群众关注或者欢迎的新闻或者信息或指某时期引人注目的地方或问题。 这里我们要讲的是技术的热点问题,SLB的热点问题,Redis的热点问题,Mysql的热点问题,分布式数据库集群的热点问题等,这类技术热点问题并不是所谓的引人注目的问题而是服务请求过多,流量集中的问题。 SLB 定义:服务器负载均衡(Server Load Balancing),实现多个服务器之间的负载均衡。 主流软件负载均衡有:1:LVS,2:Nginx,3:HAProxy LVS 1:工作在网络

2022-05-08 19:12:55 1722

原创 Go Golang入门浅显易懂视频教程-中级篇-曾志海-专题视频课程

此课程在“Go Golang入门浅显易懂视频教程-基础篇”的课程上进一步强化,进一步深入,从基础到使用,到复杂的逻辑处理,帮助同学们一步一个脚印的学习。...

2018-05-29 13:51:11 314

原创 Go Golang入门浅显易懂视频教程-基础篇-曾志海-专题视频课程

作为多年开发经验的程序员,我推荐大家学习Go语言,Go是Google开发的一种编译型,可平行化,并具有垃圾回收功能的编程语言,且具有高效编程、高效编译、高效执行的特性。Go语言易学易用,学习成本很低。...

2018-05-28 13:01:27 267

mysql-5.5.43.tar.gz

# Copyright (c) 2006, 2014, Oracle and/or its affiliates. All rights reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; version 2 of the License. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA CMAKE_MINIMUM_REQUIRED(VERSION 2.6) # Avoid warnings in higher versions if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" GREATER 2.6) CMAKE_POLICY(VERSION 2.8) endif() # We use PROPERTIES LINK_INTERFACE_LIBRARIES. See cmake --help-policy CMP0022 IF(CMAKE_VERSION VERSION_EQUAL "2.8.12" OR CMAKE_VERSION VERSION_GREATER "2.8.12") CMAKE_POLICY(SET CMP0022 OLD) ENDIF() # We use the LOCATION target property (CMP0026) # and get_target_property() for non-existent targets (CMP0045) # and INSTALL_NAME_DIR (CMP0042) IF(CMAKE_VERSION VERSION_EQUAL "3.0.0" OR CMAKE_VERSION VERSION_GREATER "3.0.0") CMAKE_POLICY(SET CMP0026 OLD) CMAKE_POLICY(SET CMP0045 OLD) CMAKE_POLICY(SET CMP0042 OLD) ENDIF() MESSAGE(STATUS "Running cmake version ${CMAKE_VERSION}") # Will set GIT_EXECUTABLE and GIT_FOUND FIND_PACKAGE(Git) SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake) # First, decide about build type (debug or release) # If custom compiler flags are set or cmake is invoked with -DCMAKE_BUILD_TYPE, # respect user wishes and do not (re)define CMAKE_BUILD_TYPE. If WITH_DEBUG{_FULL} # is given, set CMAKE_BUILD_TYPE = Debug. Otherwise, use Relwithdebinfo. IF(DEFINED CMAKE_BUILD_TYPE) SET(HAVE_CMAKE_BUILD_TYPE TRUE) ENDIF() SET(CUSTOM_C_FLAGS $ENV{CFLAGS}) OPTION(WITH_DEBUG "Use dbug/safemutex" OFF) # Distinguish between community and non-community builds, with the # default being a community build. This does not impact the feature # set that will be compiled in; it's merely provided as a hint to # custom packaging steps. OPTION(COMMUNITY_BUILD "Set to true if this is a community build" ON) # Use a default manufacturer if no manufacturer was identified. SET(MANUFACTURER_DOCSTRING "Set the entity that appears as the manufacturer of packages that support a manufacturer field.") IF(NOT DEFINED MANUFACTURER) SET(MANUFACTURER "Built from Source" CACHE STRING ${MANUFACTURER_DOCSTRING}) MARK_AS_ADVANCED(MANUFACTURER) ENDIF() # We choose to provide WITH_DEBUG as alias to standard CMAKE_BUILD_TYPE=Debug # which turns out to be not trivial, as this involves synchronization # between CMAKE_BUILD_TYPE and WITH_DEBUG. Besides, we have to deal with cases # where WITH_DEBUG is reset from ON to OFF and here we need to reset # CMAKE_BUILD_TYPE to either none or default RelWithDebInfo SET(BUILDTYPE_DOCSTRING "Choos

2015-09-12

php短信验证码程序

资源做的不是很好,不过还可以用的,给大家看看

2011-12-13

ActionScript开发技术大全

关于actionscript典型例题讲解

2011-04-11

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