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 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
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Reference: SQLNetHub.com (https://www.sqlnethub.com)
Artemakis Artemiou is a Senior SQL Server Architect, Author, a 9 Times Microsoft Data Platform MVP (2009-2018) and a Udemy Instructor. He has over 15 years of experience in the IT industry in various roles. Artemakis is the founder of SQLNetHub and TechHowTos.com. Artemakis is the creator of the well-known software tools Snippets Generator and DBA Security Advisor. Also, he is the author of many eBooks on SQL Server. Artemakis currently serves as the President of the Cyprus .NET User Group (CDNUG) and the International .NET Association Country Leader for Cyprus (INETA). Moreover, Artemakis teaches on Udemy, you can check his courses here.