similar observations regarding "flow," a field of behavioral science examining connections between satisfaction and daily activities. A flow state ensues when one is engaged in self-controlled, goal-related

required to convert raw materials into finished goods was the best predictor of quality, customer satisfaction, and employee happiness 2. one of the best predictors of short lead times was small batch sizes

trunk-based development predicts higher throughput and better stability, and even higher job satisfaction and lower rates of burnout. 5. Ch. 12 Automate and Enable Low-Risk Releases a. Just like we

/iptables -P FORWARD ACCEPT # systemctl daemon-reload # systemctl restart docker ★默认还加了DOCKER-USER这个forward链，默认全部return，导致不通，也得 放开，具体得看下iptables规则），以下操作目的为 在系统启动后等待60秒待 k8s把iptables规则设置完毕再在以下几个chain里放通所有流量，如果对防火墙 sleep 60 /usr/sbin/iptables -I DOCKER 1 -s 0.0.0.0/0 -j ACCEPT /usr/sbin/iptables -I DOCKER-USER 1 -s 0.0.0.0/0 -j ACCEPT /usr/sbin/iptables -I DOCKER-ISOLATION-STAGE-1 1 -s 0.0.0.0/0 -j service-ip：是虚拟的ip，是由kube-proxy去建立相应的iptables/ipvs规则进行流量 的转发 ★kube-proxy的代理规则模式有： 代理模式 k8s版本要求 User Space proxy mode v1.0 + iptables proxy mode v1.1 + ipvs proxy mode v1.8 + 需要在所有k8s服务器上加载ipvs内核

schema 下 的 pg_hba_file_rules表里： INSERT INTO "pg_hba_file_rules" ("line_number", "type", "database", "user_name", "address", "netmask", "auth_method", "options", "error") VALUES (94, 'host', '{all}', '{all}' #初次登录需要切换为postgres用户，直接登录，无 需密码 postgres=# alter user postgres with password 'passwdxxyy'; #修改管理员账号 postgres的密码 postgres=# postgres=# create user cof with password 'passwdxxyy2'; #创建一个名为cof的 库的所有权限 postgres=# postgres=# revoke all on database db_test from cof; #撤销用户权限 postgres=# drop user xxx; #删除用户 postgres=# exit;

息，不用于身份验证 #全局设置信息保存在 ~/.gitconfig 文件里 # git config --global user.name cof #设置用户名 # git config --global user.email cof@cof-lee.com #设置邮箱 # git config --global #初始化仓库，将在当前路径下生成.git子目录，子目录里有 此git仓库的相关信息 # git config --local user.name cof #设置用户名 # git config --local user.email cof@cof-lee.com #设置邮箱 # git config --local h�p.sslVerify #查看本地设置 ★系统设置 系统设置信息保存在/etc/gitconfig文件里 # git config --system user.name cof # git config --system user.email cof@cof-lee.com # git config --system --list

有时我们使用shi�切换输入法，若不小心按的次数多了（按2次shi� 键），结果就弹出全局搜索框，不太友好，可以关闭此功能 File → Se�ngs → Advanced Se�ngs → 右 侧 的 User Interface ， 勾 选 Disable double modifier key shortcuts ★设置每行最大长度 File → Se�ngs → Editor → Code 禁用javascript chrome_options.add_argument('--disable-javascript') # 设置UserAgent user_agent = ["--user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64)", "AppleWebKit/537.36 (KHTML "Chrome/120.0.0.0", "Safari/537.36"] chrome_options.add_argument(" ".join(user_agent)) # 创建一个浏览器驱动 driver = webdriver.Chrome(options=chrome_options) driver.maximize_window()

of buying off the shelf.  The risk of developing a system incrementally and altering it based on user feedback is often lower than that of buying a finished product that is hard to change.  The advantages product that does not fit our business and customize it until it does.  We offer our business users a user interface that is clunky because it was designed for users in the abstract across many possible companies get feedback, and then adjust what they have produced. As a result, the code can be developed in a user-centric way and match the enterprise’s needs precisely. Risk is low, because the team is constantly

must maintain a big picture, long-term view and focus on the next six-month release.  DO epics and user stories to concisely define the desired system functions and provide the foundation for Agile estimation estimation and planning. o They describe what the users want to accomplish with the resulting system. User stories help ensure that users, acquirers, developers, testers, and other stakeholders have a clear is established to help estimate the level of work for each requirement (i.e., as translated into user stories)

the-heck-do-you-start  The myth of the single metric  Four roles (CEO, Operations, Developer, User)  Sunburst chart how do visitors move through my siteLinux Performance Tools by Brendan Gregg (Netflix) process, entropy  Actively discourage email: it is exclusive Where there any key themes?  Real User Monitoring: more valuable than any other metric  Web Performance: 2 seconds is the magic number