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Designing Instagram

High Scalability

When the server receives a request for an action (post, like etc.) The streaming data store makes the system extensible to support other use-cases (e.g. FUN FACT : In this talk , Rodrigo Schmidt, director of engineering at Instagram talks about the different challenges they have faced in scaling the data infrastructure at Instagram.

Design 334
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New Metadata-Only Column Changes in SQL Server 2016

SQL Performance

Ultimately, tables are stored as a sequence of bytes with some metadata elsewhere in the system to describe what each of those bytes mean, and how they relate to each of the table's various columns. It requires only a few changes to system tables, and a minimal amount of logging. Improvements in SQL Server 2016.

Servers 63
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SQL Server Linux: fsync and Buffered I/O

SQL Server According to Bob

I was asked to validate the SQL Server behavior in light of the error condition involving fsync/fdatasync outlined in this article. This means data can be stored in file system cache, non-stable media. ) Assume the database application opens the backup file, allowing file system caching (~_O_DIRECT.)

Servers 40
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Sponsored Post: G-Core Labs, Close, Wynter, Pinecone, Kinsta, Bridgecrew, IP2Location, StackHawk, InterviewCamp.io, Educative, Stream, Fauna, Triplebyte

High Scalability

Close is building the sales communication platform of the future and we're looking for a Site Reliability Engineer to help us accomplish that goal. Wynter is looking for system administrators, engineers, and developers to join its research panel. has hours of system design content. InterviewCamp.io Learn more here.

Education 100
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Sponsored Post: Close, Wynter, Pinecone, Kinsta, Bridgecrew, IP2Location, StackHawk, InterviewCamp.io, Educative, Stream, Fauna, Triplebyte

High Scalability

Close is building the sales communication platform of the future and we're looking for a Site Reliability Engineer to help us accomplish that goal. Wynter is looking for system administrators, engineers, and developers to join its research panel. has hours of system design content. InterviewCamp.io Apply here.

Education 100
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Sponsored Post: G-Core Labs, Close, Wynter, Pinecone, Kinsta, Bridgecrew, IP2Location, StackHawk, InterviewCamp.io, Educative, Stream, Fauna, Triplebyte

High Scalability

Close is building the sales communication platform of the future and we're looking for a Site Reliability Engineer to help us accomplish that goal. Wynter is looking for system administrators, engineers, and developers to join its research panel. has hours of system design content. InterviewCamp.io Learn more here.

Education 100
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SQL Server on Linux: Why Do I Have Two SQL Server Processes

SQL Server According to Bob

When starting SQL Server on Linux why are there two (2) sqlservr processes? systemctl status mssql-server mssql-server.service – Microsoft SQL Server Database Engine … CGroup: /system.slice/mssql-server.service ??85829 Bob Dorr – Principle SQL Server Software Engineer.

Servers 40