⽀支持存储到ES/TiDB、 MySQL等 InfluxData stack (TICK) • Telegraf + InfluxDB + Chronograf + Kapacitor • InfluxDB：⾼高性能的时序数据库。 • vs ES: 8X写⼊入，少4X磁盘占⽤用，3~7响应速度 • Telegraf：⽀支持200+数据渠道 • 开源免费版本缺少集群、安全、管理理等功能 • Json-QL（有SQL适配器器） • 不不⽀支持外Join、窗⼝口等 其他OLAP选择: Clickhouse • 性能优越： • 10亿+条规模⽐比商业软件快5倍 • ⽐比MySQL快⼏几百倍 • 稳定可靠，⾮非Hadoop体系， • 类SQL功能 • 缺点： • 聚合结果要在⼀一台机器器内存内 • 缺少完整更更新删除操作 • ⽀支持操作系统有限 ⼤

....................................................................................... 386 使用 MySQL ................................................................................................. (400, 300) RGB >>> im.thumbnail((200, 100)) >>> im.save('thumb.jpg', 'JPEG') 其他常用的第三方库还有 MySQL 的驱动：mysql-connector-python，用 于科学计算的 NumPy 库：numpy，用于生成文本的模板工具 Jinja2，等 等。 模块搜索路径 当我们试图加载一个模块时，Python /bin:/usr/local /mysql/bin', ...}) 要获取某个环境变量的值，可以调用 os.environ.get('key')： >>> os.environ.get('PATH') '/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/usr/local /mysql/bin' >>> os.environ

Kubernetes 中请求处理流程 什么是准入控制器 用 Python 实现准入控制器 与其他方案对比 Kubernetes 架构 kube-apiserver Kubernetes 集群的核心组件 处理集群内外的所有请求 Kubernetes 请求处理流程  API Handler 匹配处理链路（ /apis ）  认证 / 授权  Mutating Admission ：可进行变更操作

大规模生产环境下的 Faster-CPython 主讲人： 王文洋 老板思维 已知：公司有xx个计算集群 每个集群有xxxxx个core Python进程占比xx% 如果：提升 10% 那么：可以节省 xx * xxxxx * xx% * 10%个core 降本 xx * xxxxx * xx% * 10% * n >> 我的工资 结论：。。。 Why

ResearchAndMarkets.com Python赋能智慧物流 1-行业背景 · AMR调度系统 AGV/AMR两大核心技术领域 AGV/AMR本体定位/控制技 术 AGV/AMR集群调度系统 -状态机 -通讯模块 -运动控制 -任务执行 -外设 对接 -任务调度 -路径规划 -交通管制 -AMR控 制 -外设对接 Python赋能智慧物流 1-行业背景 · 传统AMR调度系统

Utilities Settings Frequently Asked Questions Databases General notes PostgreSQL notes MariaDB notes MySQL notes SQLite notes Oracle notes Subclassing the built-in database backends Using a 3rd-party database is only necessary if you’d like to work with a “large” database engine like PostgreSQL, MariaDB, MySQL, or Oracle. To install such a database, consult the database installation information. Install Django run the command-line client for your database and type \dt (PostgreSQL), SHOW TABLES; (MariaDB, MySQL), .tables (SQLite), or SELECT TABLE_NAME FROM USER_TABLES; (Oracle) to display the tables Django created

Utilities Settings Frequently Asked Questions Databases General notes PostgreSQL notes MariaDB notes MySQL notes SQLite notes Oracle notes Subclassing the built-in database backends Using a 3rd-party database is only necessary if you’d like to work with a “large” database engine like PostgreSQL, MariaDB, MySQL, or Oracle. To install such a database, consult the database installation information. Install Django run the command-line client for your database and type \dt (PostgreSQL), SHOW TABLES; (MariaDB, MySQL), .tables (SQLite), or SELECT TABLE_NAME FROM USER_TABLES; (Oracle) to display the tables Django created

Utilities Settings Frequently Asked Questions Databases General notes PostgreSQL notes MariaDB notes MySQL notes SQLite notes Oracle notes Subclassing the built-in database backends Using a 3rd-party database is only necessary if you’d like to work with a “large” database engine like PostgreSQL, MariaDB, MySQL, or Oracle. To install such a database, consult the database installation information. Install Django ENGINE – Either 'django.db.backends.sqlite3', 'django.db.backends.postgresql', 'django.db.backends.mysql', or 'django.db.backends.oracle'. Other backends are also available. NAME – The name of your database

Utilities Settings Frequently Asked Questions Databases General notes PostgreSQL notes MariaDB notes MySQL notes SQLite notes Oracle notes Subclassing the built-in database backends Using a 3rd-party database is only necessary if you’d like to work with a “large” database engine like PostgreSQL, MariaDB, MySQL, or Oracle. To install such a database, consult the database installation information. Install Django ENGINE – Either 'django.db.backends.sqlite3', 'django.db.backends.postgresql', 'django.db.backends.mysql', or 'django.db.backends.oracle'. Other backends are also available. NAME – The name of your database