Mon.Sep 09, 2019

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Giving data a heartbeat

Dynatrace

Dynatrace news. I love data. I have spent virtually my entire career looking at data. Synthetic data, network data, system data, and the list goes on. In recent years, the amount of data we analyze has exploded as we look at the data collected by Real User Monitoring (RUM), meaning every session, every action, in every region and so on. As much as I love data, data is cold, it lacks emotion.

Big Data 147
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17 Best Tips To Write Effective Test Cases

DZone

A place to write effective test cases. Test cases are the first step in any testing cycle and are very important for any project. If anything goes wrong at this step, the impact gets proliferated in the entire software testing process. This can be avoided if the testers use proper procedures and guidelines while creating the. In this blog, I am going to share some simple yet effective tips which you could use for writing effective test cases.

Testing 124
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How It Works: SQL Server Lock Partitioning

SQL Server According to Bob

Previous posts have discussed partitioning, for example, a partitioned memory object [link] and how a latch maintains the desired access (exclusive, shared, …) [link]. Quick Refresher Over Partitioned Protection/Locking. Acquiring shared access requires only the local partition be acquired (lightweight scalability). Acquiring exclusive access requires all partitions be acquired (heavier and can be slower).

Servers 103
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Java Performance: For-Looping vs. Streaming

DZone

How well does your Java perform? Iteration Performance. There are many views on how to iterate with high performance. The traditional way of iterating in Java has been a for-loop starting at zero and then counting up to some pre-defined number: private static final int ITERATIONS = 10_000; @Benchmark public int forUp() { int sum = 0; for (int i = 0; i < ITERATIONS; i++) { sum += i; } return sum; }.

Java 122
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Test ETag Browser Caching with cURL Requests

The Polyglot Developer

Recently I’ve been playing around with Netlify and as a result I’m becoming more familiar with caching strategies commonly found with content delivery networks (CDN). One such strategy makes use of ETag identifiers for web resources. In short, an ETag identifier is a value, typically a hash, that represents the version of a particular web resource.

Cache 69
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How Performance Testers Can Help Protect and Secure IT

DZone

In August of 2018 Bob Diachenko, Director of Cyber Risk Research at Hacken.io found that over 2 million Mexican citizens had their healthcare data leaked due to a security vulnerability in a system's database. At that same time, he found that the data of 93 thousand users of a popular babysitting app, Sitter, was also exposed. As if this isn't scary enough, in November, Marriott Corporation revealed that over the last four years hackers had broken into its reservation system and stealing the pri

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SQL Server Index Fill factor with Performance Benchmark

SQL Shack

In this article, we will study in detail about the how SQL Server Index Fill factor works. Index Fill factor SQL Server Index Fill Factor is a percentage value to be filled data page with data in SQL Server. This option is available in index properties to manage data storage in the data pages. It […].

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Execute SQL Task in SSIS: SqlStatementSource expression vs Variable Source Type

SQL Shack

In this article, I will give an overview of Execute SQL Task in SSIS and I will try to illustrate some of the differences between writing an expression to evaluate SqlStatementSource property or writing this expression within a variable and change the Execute SQL Task Source Type to variable. This article is the fourth article […].

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How It Works: SQL Server LOGIN_STATS (sys.dm_exec_sessions)

SQL Server According to Bob

To track the login statistical information, enable the sp_configure value ‘common criteria compliance enabled ‘ setting and restart SQL Server. The sys.dm_exec_sessions DMV is one way to query the statistical login information. The rows shown in this example belong to the sa user on my system. The values are different because the values are obtained when the specific session was created (at login time for the individual session.).

Servers 40