- #SQLITE TRANSACTION INCREASED SPEED HOW TO#
- #SQLITE TRANSACTION INCREASED SPEED MAC OS#
- #SQLITE TRANSACTION INCREASED SPEED ANDROID#
We are aware of many successful applications with multi-gigabyte databases. SQLite achieves one of the best data access performances among other embedded, file-server, and client-server database engines used by the Delphi applications.Very powerful API, allowing you to extend the engine in practically all areas.
#SQLITE TRANSACTION INCREASED SPEED ANDROID#
Multi-device: Windows, macOS, iOS, and Android are supported out of the box. Self-contained: no external dependencies. Faster than popular client/server database engines for most common operations. Supports terabyte-sized databases and gigabyte-sized strings and blobs. A complete database is stored in a single cross-platform disk file. Zero-configuration - no setup or administration needed. Transactions are atomic, consistent, isolated, and durable (ACID) even after system crashes and power failures. It is used by Firefox, Skype, and McAfee anti-virus. #SQLITE TRANSACTION INCREASED SPEED MAC OS#
You can find it on all iOS and Android mobile devices and on Mac OS desktops. It is the DBMS most widely deployed database in the world with a rough estimate of 500M installations. The SQLite is an embedded SQL database engine, developed by SQLite Consortium.
6 SQLite Transactions, Locking, Threads and Cursors. 4.1 Mapping SQLite to FireDAC Data Types. 2.6 Manage an SQLite Database from a Delphi Application. 2.5 Using Multiple SQLite databases in a Delphi Application. 2.4 Working with Unicode and SQLite Databases. 2.3 Using an SQLite In-memory Database in a Delphi Application. 2.2 Creating a SQLite Database from a Delphi Application. 2.1 Connecting to the SQLite Database from a Delphi Application. For beginners, we suggest starting from the Getting Started article and looking into the FireDAC\Samples\Getting Started\SQLite demo. This article requires knowledge of the FireDAC basics and of the main library APIs. Advanced SQLite Techniques: finally we introduce some advanced SQLite concepts, such as updates logging and SQL authorization. Extending SQLite Engine: as an embedded DBMS, the SQLite engine can be extended by the Delphi application code. #SQLITE TRANSACTION INCREASED SPEED HOW TO#
SQLite Transactions, Locking, and Cursors: explains how to work with transactions in an SQLite environment.SQLite SQL Commands: main aspects of the SQLite SQL dialect for Delphi application developers.
Without understanding how it works, it is difficult to effectively store and retrieve the data in Delphi applications.
SQLite Data Types: SQLite has a unique data type system. The topic explains how it works and how to control it. SQLite Encrypted Database: the database encryption is one of the important SQLite features. Using SQLite Database: explains how to create, connect to, and manage the SQLite database in Delphi application. Introduction to SQLite: reviews SQLite features, missed features, possible applications, and applications not for SQLite. For storing around 100 million rows of around 90 byes each, what do you expect the best case insertion rate to be? I'm trying to set my own expectations of what we can achieve with our current approach.This reference article has several sections:. Why does memcpy() hog so much of the CPU when we're only storing around ~1.5MB/sec? Is this normal?. 97% of the time is spent in sqlite3BtreeMovetoUnpacked(). I see that around 75% of the time is spent in memcpy_repmovs(). We compile sqlite with SQLITE_WIN32_MALLOC and SQLITE_WIN32_HEAP_CREATE. My machine is on Azure with 12 cores and has 128 GB of RAM. 
Currently it takes around 90 minutes which means the insertion rate is ~18000 rows/second. The DB grows to ~9GB after it's completely populated. We need to create the DB from scratch on launch and populate 100 million rows in the table. We have an in-memory database with a simple table(3 integers and a string, the first 3 numbers form the primary key, no other indexes at this point ).
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