100500 ways of caching in Oracle Database

100500 ways of caching in Oracle DatabaseTelling what caches are, what a Result Cache is, how it is made in Oracle and in other databases is not very interesting and rather patterned. But everything gets completely different colors when it comes to specific examples.
Alexander Tokarev
( Shtock ) Built his report on Highload ++ 2017 on the basis of cases. And it was based on the cases, he told me when the home-made cache can be handy, what the pain of the server-side Result Cache is and how to replace it with the client, and in general brought up a number of useful tips for setting up Result Cache in Oracle.
 
 
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Missed deadline, or why more than half of the companies were not ready for GDPR

Missed deadline, or why more than half of the companies were not ready for GDPRIn recent days, letters to the mail regularly from different companies, applications, services and sites that you have ever used or where your accounts started. The letters are about the same - they report a change in the privacy policy and explain how the company processes personal data.
 
 
We are already wrote about that , what exactly changes in the data processing policies of major IT companies: WhatsApp, Facebook, Instagram and Twitter. Now we understand why dozens of letters from many services began to come only now, after a formal deadline for the GDPR, why not all companies were ...
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Data warehouse performance: new digits

Data warehouse performance: new digitsIn our previous post, we shared our measurements of hypervisor performance after installing patches against the vulnerabilities of Meltdown and Specter. Today it's time to talk about the performance of the data warehouse.
 
 
 
 
Thanks to the optimizations of VzKernel and its recompilation with the "Retpoline" option, we replaced the vulnerable machine code sequences and almost completely eliminated the performance problems caused by the need to protect the hypervisor from vulnerabilities in Intel processors. As a result, the decrease in productivity was reduced to 1-2%. However, against this ...
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Security of instant messengers: why storing messages in a locker can be a good idea

Security of instant messengers: why storing messages in a locker can be a good idea
 
 
One of the biggest problems of modern instant messengers is an excessive desire to learn as much user data as possible. Despite the fact that most products use advanced security technologies and strong encryption algorithms, all this does not mean protecting user data. And blockade can be an instrument to solve this problem. policy of using Facebook data . The social network, which owns both its messenger and WhatsApp, stores information and content created by users, data about their friends and connections, usage of the application, transactions, and even information that other users have published ...
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Column DBMS versus lowercase, how about a compromise?

Column DBMS versus lowercase, how about a compromise?
 
Column DBMS actively developed in the zero years, at the moment they found ours and almost do not compete with traditional, lower-level systems. Under the cut, the author decides whether a universal solution is possible and how expedient it is.
 
Here ):
 
 
Commercial
 
 
 
1010data's Tenbase database
 
Alterian's Engine
 
Aster Data Systems
 
Calpont InfiniDB Enterprise Edition
 
EXASOL
 
...
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IIA. Storage of medical data

IIA. Storage of medical data  
 
Automation Today, no one is surprised by this word. Every year more and more different programs and mechanisms are created to help a person in his work. Some organizations are better equipped, others are worse, but all without exception seek to reduce production costs, increase profits and improve the quality of the final product. This trend was not ignored by the medical field. Along with the number of diagnostic centers, the demand for corresponding software is also growing. In some centers, LIS (laboratory information system) is used, in others - RIS (radiological information system), and the third ...
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Magic on the verge of extreme: fearless 7-ka date of the centers

Magic on the verge of extreme: fearless 7-ka date of the centers  
 
Most recently, a list of applicants for the title of "the most beautiful data center" of the world was published. It was our turn to combine beauty with extreme. That's how ComTec has a list of the 7 most extreme server farms. Whether it's a deep cave at the South Pole or deep waters off the Pacific coast of the United States, the data is safely stored in extreme places around the world.
 
Ice Cube Lab - More than 1200 computing cores and three petabytes of memory, cooling server capacity at an outside temperature of less than -40 - at least extremes. You can not just take and run such a chilling ...
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Localization of personal data not Russians

Localization of personal data not Russians  
 
On September ? 201? the Russian Federation began to act on the location of storage and individual processing of personal data, as defined in Federal Law No. 242 of July 2? 2014 "On Amending Certain Legislative Acts of the Russian Federation Regarding Specification of the Procedure for the Processing of Personal Data in information and telecommunication networks ".
 
 
September ? 2017 Roskomnadzor published its report on the work done, on compliance with the legislation, we wrote more about this in our article .
 
 
Well, that's for ...
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Data storage: a brief overview of this year's trends

This week we are they told , why not all of the implemented "green" technologies in the data center are effective. Today we propose to talk about what is happening in the field of data storage. By Forecasts Statista, in 2018 the total amount of data that is "contained" in the data centers will reach 1450 Ebytes, and in this area, their trends are being formed, which you need to know.
 
 
Data storage: a brief overview of this year's trends

 
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Pure Storage ActiveCluster in conjunction with VMware: review and testing

Pure Storage ActiveCluster in conjunction with VMware: review and testing  
 
Not so long ago Pure Storage company announced the new ActiveCluster functionality - active /active metro cluster between data stores. This is the technology of synchronous replication, in which a logical volume is stretched between two stores and is available for reading /writing on both. This functionality is available with the new version of the firmware Purity //FA 5 and is absolutely free. Pure Storage also promised that the configuration of the stretched cluster was never so simple and understandable.
 
 
In this article we will tell you about ActiveCluster: what it consists of, how it works and ...
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