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# What is OceanBase Database
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<p align="center">
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<a href="https://github.com/oceanbase/oceanbase">
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<img alt="OceanBase Logo" src="images/logo.svg" width="50%" />
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</a>
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</p>
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<p align="center">
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<a href="https://github.com/oceanbase/oceanbase/blob/master/LICENSE">
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<img alt="license" src="https://img.shields.io/badge/license-MulanPubL--2.0-blue" />
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</a>
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<a href="https://github.com/oceanbase/oceanbase/releases">
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<img alt="license" src="https://img.shields.io/badge/dynamic/json?color=blue&label=release&query=tag_name&url=https%3A%2F%2Fapi.github.com%2Frepos%2Foceanbase%2Foceanbase%2Freleases%2Flatest" />
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</a>
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<a href="https://github.com/oceanbase/oceanbase">
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<img alt="stars" src="https://img.shields.io/badge/dynamic/json?color=blue&label=stars&query=stargazers_count&url=https%3A%2F%2Fapi.github.com%2Frepos%2Foceanbase%2Foceanbase" />
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</a>
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<a href="https://github.com/oceanbase/oceanbase">
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<img alt="forks" src="https://img.shields.io/badge/dynamic/json?color=blue&label=forks&query=forks&url=https%3A%2F%2Fapi.github.com%2Frepos%2Foceanbase%2Foceanbase" />
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</a>
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<a href="https://en.oceanbase.com/docs/community-observer-en-10000000000829617">
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<img alt="English doc" src="https://img.shields.io/badge/docs-English-blue" />
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</a>
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<a href="https://www.oceanbase.com/docs/oceanbase-database-cn">
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<img alt="Chinese doc" src="https://img.shields.io/badge/文档-简体中文-blue" />
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</a>
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<a href="https://github.com/oceanbase/oceanbase/actions/workflows/compile.yml">
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<img alt="building status" src="https://img.shields.io/github/actions/workflow/status/oceanbase/oceanbase/compile.yml?branch=master" />
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</a>
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<a href="https://github.com/oceanbase/oceanbase/commits/master">
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<img alt="last commit" src="https://img.shields.io/github/last-commit/oceanbase/oceanbase/master" />
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</a>
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<a href="https://join.slack.com/t/oceanbase/shared_invite/zt-1e25oz3ol-lJ6YNqPHaKwY_mhhioyEuw">
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<img alt="Join Slack" src="https://img.shields.io/badge/slack-Join%20Oceanbase-brightgreen?logo=slack" />
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</a>
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</p>
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OceanBase Database is a native distributed relational database. It is developed entirely by Ant Group. OceanBase Database is built on a common server cluster. Based on the Paxos protocol and its distributed structure, OceanBase Database provides high availability and linear scalability. OceanBase Database is not dependent on specific hardware architectures.
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**OceanBase Database** is a distributed relational database. It is developed entirely by Ant Group. OceanBase Database is built on a common server cluster. Based on the [Paxos](https://lamport.azurewebsites.net/pubs/lamport-paxos.pdf) protocol and its distributed structure, OceanBase Database provides high availability and linear scalability. OceanBase Database is not dependent on specific hardware architectures.
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## Core features
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# Key features
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* **Transparent Scalability** : An OceanBase cluster can be scaled out to 1,500 nodes transparently, handling petabytes of data and a trillion rows of records.
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* **Ultra-fast Performance** : The only distributed database that has refreshed both TPC-C record, at 707 million tmpC, and TPC-H record, at 15.26 million QphH @30000GB.
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* **Real-time Operational Analytics** : A unified system for both transactional and real-time operational analytics workloads.
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* **Continuous Availability** : OceanBase Database adopts Paxos Consensus algorithm to achieve Zero RPO and less than 8 seconds of RTO.
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* **MySQL Compatible** : OceanBase Database is highly compatible with MySQL, which ensures that zero or few modification is needed for migration.
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* **Cost Effeciency** : The cutting-edge compression technology saves 70%-90% of storage costs without compromising performance. The multi-tenancy architecture achieves higher resource utilization.
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- Scalable OLTP
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- Linear scalability by adding nodes to the cluster
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- Partition-level leader distribution and transparent data shuffling
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- Optimized performance for distributed transaction through "table group" technology
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- High concurrency updates on hot row through early lock release (ELR)
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- 80000+ connections per node and unlimited connections in one instance through multi threads and coroutines
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- Prevent silent data corruption (SDC) through multidimensional data consistency checksum
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- No.1 in TPC-C benchmark with 707 million tpmC
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- Operational OLAP
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- Process analytical tasks in one engine, no need to migrate data to OLAP engine
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- Analyze large amounts of data on multiple nodes in one OceanBase cluster with MPP architecture
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- Advanced SQL engine with CBO optimizer, distributed execution scheduler and global index
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- Fast data loading through parallel DML, and with only 50% storage cost under compression
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- Broke world record with 15.26 million QphH in TPC-H 30TB benchmark in 2021
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- Multi-tenant
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- Create multiple tenants (instances) in one OceanBase cluster with isolated resource and access
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- Multidimensional and transparently scale up/out for each tenant, and scaling up takes effect immediately
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- Database consolidation: multi-tenant and flexible scaling can achieve resource pooling and improve utilization
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- Improve management efficiency and reduce costs without compromising performance and availability
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## Quick start
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See [Quick start](https://open.oceanbase.com/quickStart) to try out OceanBase Database.
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## System architecture
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See also [key features](https://en.oceanbase.com/product/opensource) for more details.
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# System architecture
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## Roadmap
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[Learn More](https://en.oceanbase.com/docs/community-observer-en-10000000000829641)
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# Quick start
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## How to deploy
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## Case study
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### 🔥 Deploy by all-in-one
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For our success stories, see [Success stories](https://www.oceanbase.com/en/customer/home).
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You can quickly deploy a standalone OceanBase Database to experience with the following commands.
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## Contributing
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**Note**: Linux Only
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Your contributions to our code will be highly appreciated. For details about how to contribute to OceanBase, see [Contribute to OceanBase](https://github.com/oceanbase/oceanbase/wiki/Contribute-to-OceanBase).
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```shell
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# download and install all-in-one package (internet connection is required)
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bash -c "$(curl -s https://obbusiness-private.oss-cn-shanghai.aliyuncs.com/download-center/opensource/oceanbase-all-in-one/installer.sh)"
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source ~/.oceanbase-all-in-one/bin/env.sh
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## Licensing
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# quickly deploy OceanBase database
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obd demo
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```
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### 🐳 Deploy by docker
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1. Pull OceanBase image (optional)
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```shell
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docker pull oceanbase/oceanbase-ce
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```
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2. Start an OceanBase Database instance
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```shell
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# Deploy an instance with the maximum specifications supported by the container.
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docker run -p 2881:2881 --name obstandalone -e MINI_MODE=0 -d oceanbase/oceanbase-ce
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# Or deploy a mini standalone instance.
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docker run -p 2881:2881 --name obstandalone -e MINI_MODE=1 -d oceanbase/oceanbase-ce
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```
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3. Connect to the OceanBase Database instance
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```shell
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docker exec -it obstandalone ob-mysql sys # Connect to the root user of the sys tenant.
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docker exec -it obstandalone ob-mysql root # Connect to the root user of the test tenant.
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docker exec -it obstandalone ob-mysql test # Connect to the test user of the test tenant.
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```
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See also [Quick experience](https://en.oceanbase.com/docs/community-observer-en-10000000000829647) or [Quick Start (Simplified Chinese)](https://www.oceanbase.com/docs/common-oceanbase-database-cn-10000000001692850) for more details.
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## How to build
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See [OceanBase Developer Document](https://github.com/oceanbase/oceanbase/wiki/Compile) to learn how to compile and deploy a munually compiled observer.
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# Roadmap
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For future plans, see [Roadmap 2023](https://github.com/oceanbase/oceanbase/issues/1364).
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See also [OceanBase Roadmap](https://github.com/orgs/oceanbase/projects) for more details.
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# Case study
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OceanBase makes data management and use easier with technology innovation. It has been serving more than 400 customers upgrade their database from different industries, including Financial Services, Telecom, Retail, Internet and more.
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See also [success stories](https://en.oceanbase.com/customer/home) and [Who is using OceanBase](https://github.com/oceanbase/oceanbase/issues/1301) for more details.
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# Contributing
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Contributions are highly appreciated. Read the [Contribute to OceanBase](https://github.com/oceanbase/oceanbase/wiki/Contribute-to-OceanBase) guide to getting started.
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# License
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OceanBase Database is licensed under the Mulan Public License, Version 2. See the [LICENSE](LICENSE) file for more info.
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## Community
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# Community
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- [oceanbase.slack](https://join.slack.com/t/oceanbase/shared_invite/zt-1e25oz3ol-lJ6YNqPHaKwY_mhhioyEuw)
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- [Forum (Simplified Chinese)](https://ask.oceanbase.com/)
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- [DingTalk 33254054 (Simplified Chinese)](https://h5.dingtalk.com/circle/healthCheckin.html?corpId=ding12cfbe0afb058f3cde5ce625ff4abdf6&53108=bb418&cbdbhh=qwertyuiop&origin=1)
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- [WeChat (Simplified Chinese)](https://gw.alipayobjects.com/zos/oceanbase/0a69627f-8005-4c46-be1f-aac7a2b85c13/image/2022-03-01/85d42796-4e22-463a-9658-57402d7b9bc3.png)
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Join the OceanBase community via:
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* [Slack Workspace](https://join.slack.com/t/oceanbase/shared_invite/zt-1e25oz3ol-lJ6YNqPHaKwY_mhhioyEuw)
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* [Chinese User Forum](https://ask.oceanbase.com/)
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* DingTalk Group: 33254054 ([QR code](images/dingtalk.svg))
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* WeChat Group (Add the assistant with WeChat ID: OBCE666)
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