SQL Server According to Bob

SEPTEMBER 9, 2019

The lock manager (LockMgr) is designed to track partitioned and non-partitioned locks. The lock manager uses a hash table that is accessed based on the LockResource, where the LockResource is byte array for opaque storage. Bob Dorr – Principal Software Engineer SQL Server.

Servers 103

Servers Database Scalability Tuning 103

The Morning Paper

MARCH 3, 2020

It takes you through the thinking processes and engineering practices behind the design of a key part of the control plane for AWS Elastic Block Storage (EBS): the Physalia database that stores configuration information. Engineering decisions involve making lots of trade-offs. Millions of tiny databases , Brooker et al.,

Database 106

Database AWS Network Design 106

All Things Distributed

DECEMBER 18, 2012

Jul 6 - End-To-End Arguments in System Design , by J. Jul - 13 Hints for Computer Systems Design Proceedings of the Ninth ACM Symposium on Operating Systems Principles, pp. Aug 24 - The Five-Minute Rule Ten Years Later, and Other Computer Storage Rules of Thumb , Jim Gray and Goetz Graefe, ACM SIGMOD Record 26 (4): 63â??68,

Operating System 144

Operating System Cache AWS Scalability 144

SQL Server According to Bob

JUNE 3, 2016

Internally DBCC CHECK* uses a page scanning coordinator design (MultiObjectScanner.) SQL Server 2016 changes the internal design to (CheckScanner), applying no lock semantics and a design similar to those used with In-Memory Optimized (Hekaton) objects, allowing DBCC operations to scale far better than previous releases.

Hardware 40

Hardware Cache Servers Software Engineering 40

The Netflix TechBlog

NOVEMBER 22, 2019

4:45pm-5:45pm NFX 202 A day in the life of a Netflix Engineer Dave Hahn , SRE Engineering Manager Abstract : Netflix is a large, ever-changing ecosystem serving millions of customers across the globe through cloud-based systems and a globally distributed CDN. Wednesday?—?December

AWS 37

AWS Entertainment Open Source Benchmarking 37

SQL Server According to Bob

NOVEMBER 8, 2016

There are two ways to take advantage of non-volatile storage (NVDIMM) for SQL Server (Direct access or Block Device storage.). Block storage is what you think of today as disk access. SQL works with the operating system to detect the non-volatile storage devices and leverage them for the tail of the log.

Cache 40

Cache Servers Media Storage 40

SQL Server According to Bob

MAY 19, 2019

For example, Azure SQL Database Edge can already use TSQL Predict Machine Learning (ML) and Column Storage. Testing shows that locking mechanisms, such as spin locks, start to become saturated when shared across 8 to 12 CPUs and where the physics become a direct contributor to partitioned design. Reference Automatic Soft NUMA.

IoT 61

IoT Servers Development Cache 61

SQL Server According to Bob

MARCH 27, 2017

When designing the core-mini dump capabilities we looked at several solutions before landing on Breakpad. The following diagram could be a high level view of the Windows, ELF or Breakpad file as they are similar in design. Default ) Uses an addition based design were additional memory, beyond a mini-dump, is included.

Servers 40

Servers Virtualization Storage Design 40

SQL Server According to Bob

AUGUST 8, 2016

For internal structures SQL Server often applies partitioning designs. For example, SQL Server may employ a per NODE or per CPU based design. The local SSD used for Buffer Pool Extension is WARM because it is commonly faster than going to the stable storage (COLD, Disk.). COLD synchronization objects are the opposite of HOT.

Cache 40

Cache Energy Database Servers 40

The Morning Paper

DECEMBER 3, 2019

Each instance is a full stack service in its own right, with front-end GUI components, a back-end server and data storage, and all the code necessary to coordinate them. If the thing you’re trying to build doesn’t fit with our framework, you probably have a design flaw! Yep, you read that right.

Open Source 52

Open Source Programming Speed Software 52

The Morning Paper

APRIL 16, 2019

During the ten week course, students implement four different assignments: an exactly-once RPC protocol; a primary-backup system; Paxos; and a scalable, transactional key-value storage system. In addition, another lesson here is that once we accept model checking is necessary, we need to design systems that are amenable to model checking.

Systems 43

Systems Efficiency Testing Strategy 43

SQL Performance

APRIL 17, 2020

When compressed, fixed-length string columns do not store trailing blanks, making them just as efficient as variable-length string columns from a storage point of view. Some of this may be due to somewhat out-of-date considerations like space usage. This is the case when using ALTER COLUMN to change from integer to smallint for example.

Servers 63

Servers Database Testing Efficiency 63

The Netflix TechBlog

APRIL 26, 2022

We will share how its design has evolved over the years and the lessons learned while building it. To understand Axion’s design, we need to know the various components that interact with it. The motivation has not changed since then; the design has. Design evolution Axion fact store has four components?—?fact

Storage 187

Storage Design Scalability Latency 187

The Netflix TechBlog

FEBRUARY 9, 2021

Before designing a solution it’s important to understand the main product requirements for such a feature: The content needs to be new, relevant, and regional (not all countries have the same catalogue). To support the demands of our stakeholders we designed a Domain Specific Language (DSL) that we call an asset generation recipe.

Engineering 165

Engineering Storage Latency Entertainment 165

The Netflix TechBlog

DECEMBER 3, 2019

mainly because of mundane reasons related to software engineering. By design, Metaflow is a deceptively simple Python library: Data scientists can structure their workflow as a Directed Acyclic Graph of steps, as depicted above. It leverages elasticity of the cloud by design?—?both both for compute and storage.

Open Source 232

Open Source AWS Infrastructure Energy 232

SQL Server According to Bob

DECEMBER 31, 2018

Using SQL Server Management Studio (SSMS) and storing the events in a table requires reading the events, streaming to table storage followed by an order by event sequence query. Bob Dorr – Principal Software Engineer SQL Server. Large traces can encounter the 32-bit SSMS memory limitations. Designer.cs.

Efficiency 40

Efficiency Code Servers Cache 40

The Netflix TechBlog

DECEMBER 3, 2019

mainly because of mundane reasons related to software engineering. By design, Metaflow is a deceptively simple Python library: Data scientists can structure their workflow as a Directed Acyclic Graph of steps, as depicted above. It leverages elasticity of the cloud by design?—?both both for compute and storage.

Open Source 134

Open Source AWS Infrastructure Energy 134

The Netflix TechBlog

NOVEMBER 3, 2022

When a new leader is elected it loads all data from external storage. Designing Data-Intensive Applications is an excellent book that goes into detail about consistency models discussed in this blog post. Overview The figure below depicts a simplified high-level architecture of a single Titus cluster (a.k.a V., & Gharachorloo, K.

Cache 224

Cache Latency Traffic Systems 224

Abhishek Tiwari

NOVEMBER 3, 2018

In the CMS selection process, developer experience is not a factor, although successful implementation and ongoing maintenance require developer friendly tooling and support for modern software engineering practices. Most of cloud object/blob storage services have native support for static site hosting.

Systems 63

Systems Cache Website Network 63

O'Reilly

MAY 19, 2020

. • More than one-third have adopted site reliability engineering (SRE); slightly less have developed production AI services. Software engineers represent the largest cohort, comprising almost 20% of all respondents (see Figure 1 ). Designing a survey inevitably entails making a spate of methodological trade-offs.

Cloud 141

Cloud Serverless AWS Architecture 141