A few days ago, on March 21st, I participated as an invited speaker at Microsoft Conference 2014 that took place in Nicosia, Cyprus.
My session was on SQL Server 2014 and specifically about what’s new in this release of SQL Server.
My session’s agenda was on the following areas of new features on SQL Server:
- Interaction with Windows Azure
- Security Enhancements
- Performance Improvements & Enhancements
- T-SQL Enhancements
- In-Memory OLTP Engine
Someone might wonder why the “In-Memory OLTP Engine” is in bold, red letters 🙂
The SQL Server In-Memory OLTP Engine
The reason is that this feature is the long-awaited in-memory processing engine that it is built-in into the SQL Server Engine and when you properly use it, you can get extremely high speedups in data processing when compared to the “traditional processing”.
The In-Memory OLTP Engine introduces new data structures described as “memory-optimized” (i.e. memory-optimized tables and table variables).
Memory-Optimized Tables
Memory-optimized tables store their data into memory using multiple versions of each row’s data. This technique is characterized as “Non-blocking multi-version optimistic concurrency control” and eliminates both Locks and Latches thus achieving breakthrough performance. The list of main features of memory-optimized tables are:
- Rows in the table are read from and written to memory
- The entire table resides in memory
- Non-blocking multi-version optimistic concurrency control
- Durable & non-durable
- A second copy maintained on disk for durability (if enabled)
- Data in memory-optimized tables is only read from disk during database recovery
- Interoperable with disk-based tables
Watch a Video About Memory-Optimized Tables
Natively-Compiled Stored Procedures
- It is compiled to native code (DLL) when it is created
- Aggressive optimizations take time at compile time
- Can only interact with memory-optimized tables
The call to a natively compiled stored procedure is actually a DLL Entry Point which is something that offers very fast execution times!
When you properly combine memory-optimized tables with natively compiled stored procedures for heavy workloads like DW ETL processes, high data insert rate processes and processes that demand low latency execution you can expect some serious speedups.
Watch a Video about Natively-Compiled Stored Procedures
Video: Frequently Asked Questions about SQL Server In Memory OLTP
Highly Recommended Tool: In-Memory OLTP Simulator
Our solution, “In-Memory OLTP Simulator“, helps you to easily benchmark standard and custom scenarios of data workloads and processing against the powerful In-Memory OLTP Engine in SQL Server. Moreover, you get rich analytics and insights, and see how Memory Optimization in SQL Server can help you boost the performance of your data processes.
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Read Also:
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Artemakis Artemiou, a distinguished Senior Database and Software Architect, brings over 20 years of expertise to the IT industry. A Certified Database, Cloud, and AI professional, he earned the Microsoft Data Platform MVP title for nine consecutive years (2009-2018). As the founder of SQLNetHub and GnoelixiAI Hub, Artemakis is dedicated to sharing his knowledge and democratizing education on various fields such as: Databases, Cloud, AI, and Software Development. His commitment to simplicity and knowledge sharing defines his impactful presence in the tech community.