TiDB

Author: h | 2025-04-24

TiDB is a MySQL-compatible, scalable, and consistent database for modern applications. Learn how to start a TiDB cluster, use TiDB SQL, and contribute to TiDB on GitHub. Download TiDB Operator for free. TiDB operator creates and manages TiDB clusters running in Kubernetes. Using TiDB Operator provided by PingCAP, you can run and

1.2 TiDB on Kubernetes - tidb-in-action

Connecting to TiDB cluster with peeweeEnglish | 中文This a sample project written by PingCAP for peewee to connect to TiDB.TiDB is a MySQL-compatible database, and peewee is a popular Object Relational Mapper (ORM) for Python.PrerequisitesPython 3.8 or higherGitA TiDB cluster. If you don't have a TiDB cluster, you can create one as follows:(Recommended) Follow Creating a TiDB Serverless Cluster to create your own TiDB Cloud cluster.Follow Deploy a Local Test TiDB Cluster or Deploy a Production TiDB Cluster to create a local clusterGetting started1. Clone the repositorygit clone tidb-python-peewee-quickstart2. Install dependencies (including peewee and PyMySQL)pip install -r requirements.txtWhy use PyMySQL?Peewee is an ORM library that works with multiple databases. It provides a high-level abstraction of the database, which helps developers write SQL statements in a more object-oriented way. However, peewee does not include a database driver. To connect to a database, you need to install a database driver. This sample application uses PyMySQL as the database driver, which is a pure Python MySQL client library that is compatible with TiDB and can be installed on all platforms. For more information, refer to peewee official documentation.3. Configure connection information(Option 1) TiDB ServerlessIn the TiDB Cloud, navigate to the Clusters page, select your TiDB Serverless cluster. Go to the Overview page, and click the Connect button in the upper right corner.Ensure the configurations in the confirmation window match your operating environment.Endpoint Type is set to PublicConnect With is set to GeneralOperating System matches your environmentIf you are running in Windows Subsystem for

tidb-samples/tidb-python-mysqlconnector-quickstart

Terms of this CSA and all Laws applicable to your use of the TiDB Cloud Services.3.2. You represent, warrant and covenant to us that you will not:a. use the TiDB Cloud Services to store, transmit, publish or make available any content that is false, defamatory, harassing, obscene, illegal, violating privacy rights or any other third-party rights, or containing viruses, malware or any other malicious code;b. access or use the TiDB Cloud Services for any illegal or unlawful activity or business (including but not limited to business without essential licenses and/or qualifications) or any purpose that violates this CSA;c. use the TiDB Cloud Services to cause damage or injury to any person or property;d. perform or disclose any benchmarking or use the TiDB Cloud Services to build similar or competitive products or services;e. permit direct or indirect access to or use of the TiDB Cloud Services in a manner that violates this CSA, including in a service bureau, outsourcing services offering, or as part of any general purpose data warehousing service for the benefit of a third party;f. reverse engineer, decompile, disassemble, or extract any element of, use data gathering or extraction tools, or otherwise discover any source code, object code, software programs, processes, algorithms, methods, techniques, data, or information embodied in the TiDB Cloud Services;g. modify, transfer, assign, pledge, lease, sell, resell, or create derivative works based on the TiDB Cloud Services or any user interfaces related to the foregoing;h. interfere with or damage the proper functioning of other users’ use or enjoyment of the TiDB Cloud Services;i. tamper with, hack, or otherwise disrupt any computer system, server, or networked device associated with the TiDB Cloud Services;j. remove or destroy any TiDB/PingCAP proprietary markings or proprietary legends placed upon or contained within the TiDB Cloud Services; ork. attempt to do any of the foregoing prohibited activities.The above-mentioned restrictions in (a) through (k) are collectively referred to as PingCAP’s “Acceptable Use Policy“.3.3. You acknowledge and agree that PingCAP may engage Amazon Web Services (AWS) or Google Cloud Platform (GCP) and other third-party service providers to provide services to PingCAP in connection

TiDB Initialization Failed - Translated - TiDB Forum

The disclosing party’s disclosure of the Confidential Information to the receiving party; provided, however, that PingCAP will protect the confidentiality of Your Content stored in the TiDB Cloud Services for as long as such data remains in the TiDB Cloud Services or otherwise in PingCAP’s possession or control.12. Export; Commercial Computer Software12.1. The TiDB Cloud Services utilize software and technology or provide access to software, technology, or technical information that may be subject to export control laws, conventions, and regulations, including the United States Export Administration Regulations and other rules and regulations of the Bureau of Industry and Security of the United States Department of Commerce and the rules and regulations of the Office of Foreign Assets Control of the United States Department of the Treasury’s US export control laws, including the US Export Administration Act and its associated regulations. You shall not, directly or indirectly, export, re-export, or release the TiDB Cloud Services or the software, technical information, or technology included therein to, or make the TiDB Cloud Services or the software, technical information, or technology included therein accessible from, any jurisdiction or country to which export, re-export, or release is prohibited by Law. You shall comply with all Laws prohibiting transfers, exports and re-exports to certain end-users and destinations or for certain end-uses (including nuclear, chemical, or biological weapons proliferation, or development of missile technology), unless written authorization is obtained from the appropriate government. PingCAP may suspend performance of the TiDB Cloud Services in its sole discretion if PingCAP believes that you are in violation or threatened violation of applicable Laws.12.2. PingCAP provides the TiDB Cloud Services, including all related software and technology, for ultimate federal U.S. government end use solely in accordance with the following: Government technical data and software rights related to the TiDB Cloud Services which include only those rights customarily provided to the public as defined in this CSA. This customary commercial license is provided in accordance with DFARS 227.7201 through 227.7202-4, DFARS 252.227-7015, FAR, 12.211, FAR 12.212, FAR 27.405-3, FAR 52.227-19, or FAR 52.227-14 (ALT III), or successor provisions, as applicable. If a. TiDB is a MySQL-compatible, scalable, and consistent database for modern applications. Learn how to start a TiDB cluster, use TiDB SQL, and contribute to TiDB on GitHub.

TiDB on KubeSphere: Release TiDB to the KubeSphere App

Introduction to TiDB for Web Scraping and Data MiningOverview of TiDB and its CapabilitiesTiDB is an open-source, distributed SQL database that combines the best features of traditional RDBMS and NoSQL technologies. Designed with a cloud-native architecture, TiDB effortlessly handles HTAP (Hybrid Transactional and Analytical Processing) workloads. Built to support horizontal scalability, TiDB is MySQL-compatible, offering ease of transition for MySQL users, along with robust features like strong consistency and high availability. The database’s backbone integrates with cutting-edge distributed systems practices, including the Raft consensus algorithm and a globally replicated architecture.TiDB’s remarkable capabilities are attributed to its architecture, which segregates storage from computing. This design allows independent scaling of each layer, ensuring a transparent scaling process for users. TiDB provides two storage engines: TiKV, a row-based storage engine, and TiFlash, a columnar storage engine, facilitating real-time HTAP processing. With TiDB supporting the MySQL 5.7 protocol, developers can leverage existing MySQL tools and skills, making adoption straightforward.See also:TiDB ArchitectureTechnical Principles of TiDBImportance of Scalable Databases in Web Scraping and Data MiningWeb scraping and data mining are foundational techniques in modern internet data gathering and analysis. These methods generate vast amounts of raw data that need to be efficiently stored, processed, and analyzed to derive actionable insights. A scalable and reliable database like TiDB is crucial for several reasons:Volume Handling: Web scraping can accumulate vast amounts of data in a short period. A scalable database can handle this influx without performance degradation.Speed: Real-time data mining and analysis require a fast database to ensure that queries return results promptly, which is critical for time-sensitive applications.Flexibility: The capacity to manage both structured and unstructured data is essential as web data comes in various formats.Fault Tolerance: With systems collecting data 24/7, downtime can lead to significant data loss. High availability features ensure continuous operation.Consistency: Ensuring data consistency across distributed systems allows for accurate analysis and reliable insights.Key Features of TiDB Relevant to Data Collection and AnalysisTiDB shines with features specifically tailored for high-volume data environments typical in web scraping and data mining:Horizontal Scalability: Easily scale out by adding more nodes to the cluster without any substantial system changes.Financial-grade High Availability: TiDB ensures data is consistently replicated across nodes using the Multi-Raft protocol, guaranteeing minimal data loss.Real-time Hybrid Processing: The combined use of TiKV and TiFlash allows TiDB to handle OLTP and OLAP workloads in one database with real-time replication.Cloud-native Design: TiDB is built for cloud deployment, providing elastic scalability and resilience within cloud-native platforms like Kubernetes.Compatibility with MySQL Ecosystem: Simple migration from MySQL facilitates adoption without extensive re-coding.Advanced Indexing and Data Sharding: Efficient data storage and retrieval strategies, such as secondary indexes and distributed transactions, keep operations swift and reliable.For details on deploying and optimizing TiDB, refer to the TiDB Best Practices.Advanced Data Retrieval with TiDBEfficient Data Storage and IndexingEfficient data storage and indexing are vital in maintaining the performance and reliability of a database under heavy load. TiDB utilizes several advanced techniques for achieving this:Primary Indexing: Underpins each row of data with an automatically generated

tidb/README.md at master pingcap/tidb - GitHub

Supports Hybrid Transactional and Analytical Processing (HTAP) workloads. It is MySQL-compatible and features horizontal scalability, strong consistency, and high availability.1.15. “TiDB Cloud Services” means PingCAP’s cloud-native TiDB that is capable of being deployed on multiple cloud platforms, such as Amazon Web Services (AWS) and Google Cloud Platform (GCP) and supports massive-scale, mission-critical online transaction processing (OLTP) and real-time analytics workloads.1.16. “User Suggestions” means all suggested improvements, enhancement requests, ideas for new functionality or customizations, recommendations, corrections or other feedback that you provide to PingCAP relating to the TiDB Cloud Services.1.17. “Your Content” means (a) any data or content that is transferred by you or on your behalf to the TiDB Cloud Services and (b) any computational results that you derive from the foregoing through use of the TiDB Cloud Services. For clarity, Your Content does not include your TiDB Cloud account information, or any data generated by you relating solely to your use of the TiDB Cloud Services (e.g., error logs).2. Registration and Your Account2.1. To register to use the TiDB Cloud Services, you must create a username and password and provide us with the information requested in the registration process. You must provide complete and accurate information during the registration process and agree to update your information to ensure it remains accurate. You are responsible for (a) keeping your account credentials secure at all times and (b) not disclosing your account credentials to any other person nor permit anyone to access your account at any time. You must contact us immediately if you believe that there was any unauthorized access to your account or if your account information is lost or stolen.2.2. IF YOU ARE USING THE TiDB CLOUD SERVICES AS AN EMPLOYEE, CONTRACTOR, OR AGENT OF AN ENTITY, THEN (a) YOU MUST BE AUTHORIZED TO BIND SUCH ENTITY IN ORDER TO ACCEPT THE TERMS OF THIS CSA AND (b) YOU REPRESENT AND WARRANT TO US THAT YOU HAVE THE AUTHORITY TO DO SO. 3. Use of the Services3.1. You may access and use the TiDB Cloud Services solely in accordance with this CSA. You will comply with the

Easy Local Development with TiDB - Blog - TiDB Forum

TiDBTiDB’s Implementation of the Percolator Transactional ModelTiDB incorporates the Percolator transactional model, originally developed by Google, to handle distributed transactions seamlessly. This model is crucial to ensuring that transactional operations in TiDB maintain the ACID properties—Atomicity, Consistency, Isolation, and Durability—even across a distributed architecture. TiDB achieves this by employing a two-phase commit process, which coordinates writes across multiple nodes, ensuring that all changes are committed only when every involved node can participate.In this model, transaction states are managed using a series of timestamps generated by the TimeStamp Oracle (TSO). The TSO ensures that each transaction is consistently ordered, eliminating the possibility of data anomalies due to concurrent operations. By separating read and write paths, TiDB can efficiently manage read operations through the MVCC mechanism, while writes are safely replicated to maintain consistency.The Percolator model enhances transaction reliability, allowing TiDB to serve applications with stringent consistency requirements, such as financial systems, where maintaining data integrity is paramount. This model reinforces TiDB’s capacity to efficiently execute distributed transactions, providing a foundation for high-performance, real-time data processing environments.How Multi-Version Concurrency Control (MVCC) Works in TiDBMVCC is a pivotal component of TiDB’s architecture, enabling it to handle numerous simultaneous transactions without compromising data integrity. In a distributed environment, transactions often compete for the same data resources. MVCC addresses this by keeping multiple versions of data, which allows read operations to access earlier versions while write operations proceed independently.In TiDB, each key is associated with different versions, represented as Key_Version. This approach allows TiDB to provide isolation for read and write operations, ensuring that reads always see a consistent view of the data, unaffected by concurrent writes. For instance, even when a key is modified several times, a read operation can access the correct version based on its logical timestamp.MVCC’s implementation in TiDB ensures that

Introduction to PingCap/TiDB/ Part-1 Installation of TiDB on

With our provision of the TiDB Cloud Services.3.4. You agree that PingCAP may collect and use non-personal, anonymous, aggregated, statistical, performance or de-identified data (other than Your Content), and other performance information for legitimate business purposes, such as support, reporting, research, improvements to TiDB Cloud Services, industry partnerships, and other legitimate internal business purposes.3.5. If you obtain or use any third-party products or services in connection with your use of the TiDB Cloud Services, you are solely responsible for evaluating and assessing such products or services to determine whether they meet your requirements. Any use of such third-party products or services are solely between you and the applicable third party, and PingCAP will have no liability with respect to such third party’s products or services.3.6. PingCAP will provide you with the level of support set forth in the SLA. 4. Fees and Payment4.1. PingCAP will calculate and bill your usage of the TiDB Cloud Services monthly. You hereby authorize PingCAP (or our designee) to charge you on the first day of each month for all applicable fees for your use of the TiDB Cloud Services during the previous month using one of the payment methods we support. You acknowledge that the amount billed each month may vary depending on the volume of your usage of the TiDB Cloud Services and that we may bill you more frequently for fees accrued in our discretion, including if we believe there is a risk of non-payment or suspect that your account may be fraudulent. All payment obligations are non-cancelable and must be paid without setoff or deduction, and all amounts paid are non-refundable. We may increase or add new fees and charges for the TiDB Cloud Services by updating the Site. In the event that we change the pricing for the TiDB Cloud Services, the fees payable by you will increase or decrease in accordance with any such changes upon the date specified on the Site. 4.2. You need to provide certain financial information to us before you begin using the TiDB Cloud Services. This financial information will solely be used for billing. TiDB is a MySQL-compatible, scalable, and consistent database for modern applications. Learn how to start a TiDB cluster, use TiDB SQL, and contribute to TiDB on GitHub. Download TiDB Operator for free. TiDB operator creates and manages TiDB clusters running in Kubernetes. Using TiDB Operator provided by PingCAP, you can run and

tidb-samples/tidb-python-pymysql-quickstart - GitHub

Of using TiFlash for real-time analysis:-- Assume the table is created and data inserted as shown before-- Enable TiFlash replica for fast analytical queriesALTER TABLE web_data SET TIFLASH REPLICA 1;-- Run a real-time analytical querySELECT url, create_time FROM web_data WHERE create_time >= '2023-01-01' ORDER BY create_time DESC;Integrating Machine Learning Models with TiDBFor data mining purposes, integrating machine learning (ML) models is essential. TiDB’s compatibility with various programming languages and platforms simplifies this integration:Python/R Integration: Connect TiDB with popular ML libraries like TensorFlow, scikit-learn, and R via MySQL connectors.Real-time Predictions: Using stream processing to generate real-time predictions directly within TiDB.Model Training Integration: Store training datasets in TiDB and deploy trained models for in-database scoring and analysis.Example of integrating TiDB with Python for ML:import mysql.connectorimport pandas as pd# Connect to TiDBconn = mysql.connector.connect( host="your_tidb_host", user="your_user", password="your_password", database="your_database")# Fetch data for machine learningquery = "SELECT url, create_time, content FROM web_data WHERE create_time >= '2023-01-01'"dataframe = pd.read_sql(query, conn)# Proceed with ML tasks using pandas dataframe, e.g., feature extractionCase Studies: Successful Data Mining Projects Using TiDBApplied Real-time Analytics in E-commerceA leading e-commerce platform integrated TiDB to handle both its transactional and analytical needs. The platform leveraged TiDB’s scalability to manage its growing user base while using TiFlash for real-time sales analytics, inventory management, and customer behavior analysis.Financial Fraud DetectionA financial institution adopted TiDB for its fraud detection system. This system utilized real-time data processing to flag potentially fraudulent transactions. By combining TiDB’s versatile storage solutions with machine learning algorithms, the institution significantly reduced its fraud response time.Social Media Sentiment AnalysisA social media analytics company deployed TiDB to manage its real-time sentiment analysis engine. By storing raw social media posts and using TiDB’s real-time analytical capabilities, the company provided up-to-the-minute sentiment analysis for its clients.These case studies are just a glimpse of how TiDB empowers various industries to harness their data effectively. For more inspirational use cases, visit PingCAP’s official blog.ConclusionIn the evolving landscape of web scraping and data mining, TiDB stands out as a robust solution tailored to scale and adapt to the needs of these modern workloads. Its hybrid storage-engine design, combined with real-time analytics capabilities, makes it a compelling choice for organizations looking to harness the full power of their data.By addressing challenges related to distributed data consistency, efficient indexing, and seamless integration with machine learning workflows, TiDB offers a comprehensive platform for data engineers and analysts alike. Whether your focus is on large-scale data collection, real-time processing, or advanced data analysis, TiDB is well-equipped to meet these demands while ensuring high availability and strong performance.For those keen on exploring TiDB further, start with the best practices guide and join the community to learn from successful case studies and expert insights.

tidb-samples/tidb-python-mysqlclient-quickstart - GitHub

Workloads. Each region acts as a mini-database responsible for a specific data range, enabling TiDB to flexibly manage resources and optimize performance.Load balancing in TiDB is managed dynamically by the PD cluster, which monitors and adjusts data placement based on node performance metrics. Regions on heavily-loaded nodes are moved to underutilized nodes to ensure even resource distribution, minimizing response time and optimizing throughput.Additionally, as data grows, regions are automatically split to maintain optimal size and performance. This dynamic region splitting allows TiDB to scale horizontally without degrading performance, accommodating growing data and ensuring application stability. Effective region management in TiDB is a testament to the system’s ability to balance load and maintain high availability, even under demanding conditions.ConclusionTiDB exemplifies innovation in database architecture by successfully merging the worlds of OLTP and OLAP into a single, coherent platform. Its distributed SQL design, coupled with a robust Raft-based consensus mechanism, ensures data consistency and reliability across its vast infrastructure. Leveraging technologies like TiKV for data distribution and MVCC for concurrency, TiDB stands out as a resilient, high-performance database solution.As businesses face increasing data demands, TiDB offers a future-proof solution that seamlessly scales while maintaining high availability. Its auto-failover capabilities ensure service continuity, while dynamic load balancing through region management optimizes performance. TiDB’s cutting-edge architecture not only meets the complex needs of modern applications but also inspires new possibilities in how databases can function in an ever-evolving digital landscape.. TiDB is a MySQL-compatible, scalable, and consistent database for modern applications. Learn how to start a TiDB cluster, use TiDB SQL, and contribute to TiDB on GitHub.

TiDB 入門 (tiup playground) TiDB - Qiita

Last updated on June 3, 2024To see previous versions, click here.This TiDB Cloud Services Agreement (this “CSA”) is an agreement between the applicable PingCAP Contracting Entity (as defined below) (“PingCAP”, “we”, “us”, or “our”) and you or the entity you represent (“you” or “your”), which contains the terms and conditions that govern your access to and use of the TiDB Cloud Services (as defined below). This CSA takes effect when you check a box confirming that you agree with the terms of this CSA and click an “I agree to the TiDB Cloud Services Agreement” or similar button or, if earlier, when you create any TiDB Cloud Services cluster.1. Definitions1.1. “Acceptable Use Policy” has the meaning set forth in Section 3.2.1.2. “Affiliate” means an entity that, directly or indirectly, owns or controls, is owned or is controlled by, or is under common ownership or control with a party. As used herein, “control” means the power to direct the management or affairs of an entity and “ownership” means the beneficial ownership of more than fifty percent (50%) of the voting equity securities or other equivalent voting interests of an entity.1.3. “Business Associate Agreement” means a business associate agreement governing the parties’ respective obligations with respect to any patient, medical or other protected health information (as defined under the Health Insurance Portability and Accountability Act of the United States, as supplemented and amended) uploaded by you to the TiDB Cloud Services in accordance with the terms of this CSA.1.4. “Confidential Information” means all information agreed in writing by both parties to be confidential or clearly identified as confidential by the disclosing party at the time of disclosure. The pricing under this CSA is the Confidential Information of both parties. Your order form(s) and Your Content stored in the TiDB Cloud Services are your Confidential Information. All technology and specifications relating to the TiDB Cloud Services are the Confidential Information of PingCAP. Notwithstanding the foregoing, “Confidential Information” shall not include information that: (a) is or becomes a part of the public domain through no act or omission of the other party; (b) was