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Премиум
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    Welcome to the Course
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    Course Update Oct 2020
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    Course Update April 2021
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    Course Update December 2021
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    Introduction to ACID
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    What is a Transaction?
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    Atomicity
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    Isolation
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    Consistency
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    Durability
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    Eventual Consistency
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    ACID by Practical Examples
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    Phantom Reads
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    Serializable vs Repeatable Read
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    How tables and indexes are stored on disk (MUST WATCH before continue)
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    Row-Based vs Column-Based Databases
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    Primary Key vs Secondary Key - What you probably didn't know
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    Create Postgres Table with a million Rows (from scratch)
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    Getting Started with Indexing
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    Understanding The SQL Query Planner and Optimizer with Explain
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    Index Scan vs Index Only Scan
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    Key vs Non-Key Column Database Indexing
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    Combining Database Indexes for Better Performance
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    How Database Optimizers Decide to Use Indexes
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    Bitmap Index Scan vs Index Scan vs Table Scan
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    Create Index Concurrently - Avoid Blocking Production Database Writes
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    Bloom Filters
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    Working with Billion-Row Table
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    B-Tree Section's Introduction & Agenda
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    Full Table Scans
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    Original B-Tree
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    How the Original B-Tree Helps Performance
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    Original B-Tree Limitations
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    B+Tree
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    B+Tree DBMS Considerations
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    B+Tree Storage Cost in MySQL vs Postgres
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    B-Tree Section's Summary
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    Introduction to Database Partitioning
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    What is Partitioning?
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    Vertical vs Horizontal Partitioning
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    Partitioning Types
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    The Difference Between Partitioning and Sharding
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    Preparing: Postgres, Database, Table, Indexes
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    Execute Multiple Queries on the Table
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    Create and Attach Partitioned Tables
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    Populate the Partitions and Create Indexes
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    Class Project - Querying and Checking the Size of Partitions
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    The Advantages of Partitioning
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    The Disadvantages of Partitioning
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    Section Summary - Partitioning
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    How to Automate Partitioning in Postgres
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    Introduction to Database Sharding
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    What is Database Sharding?
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    Consistent Hashing
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    Horizontal partitioning vs Sharding
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    Sharding with Postgres
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    Spin up Docker Postgres Shards
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    Writing to a Shard
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    Reading from a Shard
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    Advantages of Database Sharding
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    Disadvantages of Database Sharding
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    Database Sharding Section Summary
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    When Should you consider Sharding your Database?
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    Shared vs Exclusive Locks
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    Dead Locks
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    Two-phase Locking
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    Solving the Double Booking Problem (Code Example)
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    Double Booking Problem Part 2 ( Alternative Solution and explination)
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    SQL Pagination With Offset is Very Slow
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    Database Connection Pooling
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    Introduction to Database Replication
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    Master/Standby Replication
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    Multi-master Replication
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    Synchronous vs Asynchronous Replication
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    Replication Demo with Postgres 13
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    Pros and Cons of Replication
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    Twitter System Design Database Design
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    Building a Short URL System Database Backend
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    Introduction
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    What is a Database Engine?
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    MyISAM
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    InnoDB
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    XtraDB
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    SQLite
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    Aria
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    BerkeleyDB
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    LevelDB
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    RocksDB
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    Popular Database Engines
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    Switching Database Engines with mySQL
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    What are Database Cursors?
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    Server Side vs Client Side Database Cursors
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    Inserting Million Rows with Python in Postgres using Client Side Cursor
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    Querying with Client Side Cursor
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    Querying with Server Side Cursor
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    Pros and Cons of Server vs Client Side Cursors
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    How to Secure Your Postgres Database by Enabling TLS/SSL
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    Deep Look into Postgres Wire Protocol with Wireshark
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    Deep Look Into MongoDB Wire Protocol with Wireshark
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    What is the Largest SQL Statement that You can Send to Your Database
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    Best Practices Working with REST & Databases
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    Database Permissions and Best Practices for Building REST API
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    Introduction to Homomorphic Encryption
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    What is Encryption?
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    Why Can't we always Encrypt?
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    What is Homomorphic Encryption
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    Homomorphic Encryption Demo
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    Clone and Build the Code
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    Going Through the Code and the Database
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    Searching The Encrypted Database
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    Is Homomorphic Encryption Ready?
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    Q&A - October 2021
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    Q&A - November 2021
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    Q&A - December 2021
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    SELECT COUNT (*) can impact your Backend Application performance, here is why
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    How does the Database Store Data On Disk?
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    Is QUIC a Good Protocol for Databases?
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    What is a Distributed Transaction?
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    Why Uber Moved from Postgres to MySQL (Discussion)
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    Can NULLs Improve your Database Queries Performance?
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    Write Amplification Explained in Backend Apps, Database Systems and SSDs
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    Optimistic vs Pessmistic Concurrency Control
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    Introduction to ACID (Archived)
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    What is a Transaction? (Archived)
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    Atomicity (Archived)
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    Isolation (Archived)
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    Consistency (Archived)
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    Durability (Archived)