The Practice of Apache Pulsar for Logging in China Mobile - Pulsar Summit Asi...StreamNative
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As an active participant in the Apache Pulsar project, China Mobile has a deep accumulation in Pulsar's research and technical capabilities. In this presentation, we will introduce some practical experience of Pulsar and Pulsar Functions in large volume logging systems.
PowerFL meets Pulsar: A Novel Communication Framework for Privacy-Preserving ...StreamNative
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The Tencent Angel PowerFL is a fast-growing platform for privacy-preserving computation, which provides a full-stack solution for achieving the great potential in federated learning and analytics. The Angel PowerFL platform enables multiple participants to jointly build machine learning models while keeping their data confidential from each other, and it has superior performance in terms of security, efficiency and reliability.
In this talk, we will introduce a novel federated communication framework, which is built on Apache Pulsar. We use Apache Pulsar as the fundamental component to build the secure communication channels, upon which a federation SDK is built as the communication protocol for multiparty privacy-preserving computation. We will also show that our framework can support real-time federated model serving and applications.
云计算在过去的几年里成为一个非常流行名词,对于大多数人来讲,云计算依旧非常陌生,然而云计算其实已经早已走出实验室,作为成熟的产物出现在我们的面前。
我们将会详细的介绍云计算的概念,从IAAS(Infrastructure as a service)设施即服务、PAAS(Platform as a service)平台即服务、SAAS(Software as a serice)软件即服务三个层面上介绍相应的技术和产物,介绍云计算时代带给我们程序员的改变,在这样一个时代,我们程序员不再只是一个工程师,同样也是一个艺术家,可以创造出更多、更炫的产物。
Oracle security 08-oracle network securityZhaoyang Wang
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The document discusses securing Oracle Network services. It provides checklists and procedures for securing clients, the network, and the listener. It recommends configuring clients and browsers with authentication and encryption. It also recommends restricting network access through firewalls and IP address validation. For the listener, it suggests restricting privileges, password protecting administration, and monitoring logs to analyze activity and potential attacks. The goal is to describe how to securely administer the network and listener to restrict access and analyze logs for security.
Oracle security 02-administering user securityZhaoyang Wang
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This document discusses administering user security in an Oracle database. It covers how to create and manage database user accounts, including authenticating users and assigning privileges. It also covers creating and managing roles to simplify privilege management, and creating profiles to implement password security and control resource usage. Profiles allow enforcing standards for password complexity, aging, locking accounts, and limiting resource consumption. The document stresses applying the principle of least privilege and separating administrative duties for security.
云计算在过去的几年里成为一个非常流行名词,对于大多数人来讲,云计算依旧非常陌生,然而云计算其实已经早已走出实验室,作为成熟的产物出现在我们的面前。
我们将会详细的介绍云计算的概念,从IAAS(Infrastructure as a service)设施即服务、PAAS(Platform as a service)平台即服务、SAAS(Software as a serice)软件即服务三个层面上介绍相应的技术和产物,介绍云计算时代带给我们程序员的改变,在这样一个时代,我们程序员不再只是一个工程师,同样也是一个艺术家,可以创造出更多、更炫的产物。
Oracle security 08-oracle network securityZhaoyang Wang
?
The document discusses securing Oracle Network services. It provides checklists and procedures for securing clients, the network, and the listener. It recommends configuring clients and browsers with authentication and encryption. It also recommends restricting network access through firewalls and IP address validation. For the listener, it suggests restricting privileges, password protecting administration, and monitoring logs to analyze activity and potential attacks. The goal is to describe how to securely administer the network and listener to restrict access and analyze logs for security.
Oracle security 02-administering user securityZhaoyang Wang
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This document discusses administering user security in an Oracle database. It covers how to create and manage database user accounts, including authenticating users and assigning privileges. It also covers creating and managing roles to simplify privilege management, and creating profiles to implement password security and control resource usage. Profiles allow enforcing standards for password complexity, aging, locking accounts, and limiting resource consumption. The document stresses applying the principle of least privilege and separating administrative duties for security.
Economic Comparison between India and ChinaShreya Jain
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China has a larger economy than India based on GDP and GDP per capita. China also has lower unemployment and inflation rates, and a higher current account balance. However, China's GINI coefficient is worse than India's, indicating greater inequality. While China has a larger population, India has a younger population that is less urbanized. China has a larger labor force and higher rates of life expectancy, literacy, and urbanization compared to India.
MySQL 5.7 includes several new features that improve performance, replication, and high availability. Key features include performance improvements from the performance schema and optimizer enhancements, replication improvements like multi-source replication and transaction-based parallel replication, and InnoDB improvements such as online operations and general tablespaces.
SQL Tuning02-Intorduction to the CBO OptimizerZhaoyang Wang
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This document provides an introduction to the Cost-Based Oracle Optimizer (CBO). It describes the main components of the CBO including the estimator, plan generator, and OPTIMIZER_MODE. It also discusses important CBO concepts like selectivity, cardinality, cost and how they are estimated. The document provides examples of how to view CBO statistics and use 10053 tracing to analyze plans.
SQL Tuning04-Interpreting Execution PlansZhaoyang Wang
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This document discusses various methods for interpreting SQL execution plans in Oracle databases, including using the PLAN_TABLE, views like V$SQL_PLAN, and tools like DBMS_XPLAN and AUTOTRACE. It also covers gathering plan statistics and interpretation from sources like the Automatic Workload Repository (AWR).
SQL Tuning01-Introduction to SQL TuningZhaoyang Wang
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This document provides an introduction to SQL tuning. It discusses common causes of poor SQL performance such as stale statistics, missing indexes, and suboptimal execution plans. It then describes Oracle tools that can be used for SQL tuning such as the Automatic Database Diagnostic Monitor and SQL Tuning Advisor. Various SQL performance metrics are covered like wait time and how it relates to CPU and I/O times. Common SQL performance problems are also listed like parsing issues, full table scans, and redo log configuration errors. Finally, techniques for SQL tuning are discussed such as query rewrites, materialized views, and cursor sharing.
This document provides an overview of MySQL full-text search capabilities. It discusses the three types of full-text searches supported: natural language, boolean, and query expansion searches. It also covers stopwords, relevance ranking calculations, and techniques for fine-tuning full-text search performance such as configuring minimum/maximum word lengths and optimizing indexes. The document concludes with some restrictions and best practices for MySQL full-text search.
The document summarizes the key data structures used to organize data in InnoDB:
- InnoDB stores data in tablespaces which consist of data files. A tablespace header tracks free/used extents within these files.
- Data files contain fixed-size pages which are organized into extents of 1MB each. Page headers identify page types like interior, leaf, etc.
- File segments allocate ranges of pages to index trees. The root node of each index references two segment headers to allocate leaf/non-leaf pages separately.
MYSQLCLONE is a free and simple tool used to clone MySQL databases from one server to another. It can transfer the entire database including data, schemas, stored procedures, functions and events. The tool connects to the source and destination databases using connection parameters and then transfers the database objects and data in either LOAD or INSERT mode. Quick usage examples are provided to demonstrate transferring the full database, schema objects only, and row data in INSERT mode.
1. Oracle Cloud介绍及测试账户申请
- by royalwzy
1.Oracle Cloud介绍;
1.1Oracle Cloud?目前也提供最全的云服务,主要有:基础设施云服务(Infrastructure as a
Service),平台云服务(Platform as a Service),应?用软件云服务(Software as a
Service),数据云服务(Data as a Service);
1.2在IaaS服务中有私有云,私有化的公有云(Cloud@Customer,即在?自由的数据中?心中运?行行公有
云的服务,不不但满?足性能的需求也满?足了了合规性要求),弹性计算(?比如对docker的?支持),裸?金金属计
算,专?用计算,?一体机服务(EXADATA)和能把本地虚拟机迁移到公有云的Ravello?工具;
1.3在PaaS服务中有完整的数据管理理(如数据库,MySQL,?大数据等),智能的IT运维管理理(如?日志分
析,APM等),可靠的身份认证管理理(如Identity等),全?面的应?用开发与部署(如Java,Mobile,应
?用容器?等),多层次的公司集成(如SOA,集成,IoT等),完备的数据集成(如OGG,ODI等),丰富的业务
分析(如数据可视化,?大数据发现,BI等)和内容协同及社交?网络?支持(如社交,?文档等);
2.申请Oracle Cloud测试账户;
2.1进?入Oracle Cloud的官?方主?页(https://cloud.oracle.com),然后点击右上?角的[Free
Trial]按钮;
!
2.2点击[Platform & Infrastructure]部分的[Try it]链接进?入下?一步;申请的这类账户可
以使?用Oracle云的服务有:计算,存储,数据库,数据库备份,MySQL,Java,应?用容器?云和开发云服
务等;