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9 crushing performance problems in scalable systems

If you have deployed a few systems of scale, you know that some design problems are worse than others.
Itrsquo;s one thing to write tight code, and another thing to avoid introducing performance-crushing design flaws into the system.Here are nine common problems – poor design choices, really – that will cause your system to spin its wheels, or even turn against itself. Unlike many bad decisions, these can be reversed.[ Database slow? Improve the speed and scalability of your RDBMS with these 21 rules for faster SQL queries. | Keep up with the hottest topics in programming with InfoWorldrsquo;s App Dev Report newsletter. ]1. N+1 queries If you select all of a customerrsquo;s orders in one query then loop through selecting each orderrsquo;s line items in a query per order, thatrsquo;s n trips to the database plus one. One big query with an outer join would be more efficient.
If you need to pull back fewer at a time you can use a form of paging.

Developers using caches that fill themselves often write n+1 problems by accident. You can find these situations with database monitoring tools such as Oracle Enterprise Monitor (OEM) or APM tools such as Wily Introscope or just plain query logging.

There are worse versions of this problem such as people who try and crawl a tree stored in flat tables instead of using CTEs.

There are also equivalent versions of these problems in NoSQL databases, so no one is safe.To read this article in full or to leave a comment, please click here

Support Revolution continues to fix 100% of incidents within challenging SLA...

- High quality proactive support provided to customers at maximum level for the third time in six monthsUK, 25th July 2017: Support Revolution the UK-based provider of third-party software support and maintenance for Oracle and SAP systems, has today announced that it has again hit 100% Service Level Agreement (SLA) compliance, responding to and resolving customer incidents throughout June 2017.

The companyrsquo;s 2017 average SLA compliance is now 99.3%, following ongoing hard work and dedication... Source: RealWire

Oracle Patches 308 Vulnerabilities in July Critical Patch Update

The July Critical Patch Update is the largest ever for Oracle fixing flaws across the technology giant's software portfolio.

​Oracle just released its biggest set of critical security updates

Oracle's July critical patch update has a massive 308 fixes.

Nuvias Named Oracle PartnerNetwork Platinum Level Partner

Nuvias drives expansion of EMEA Unified Communications PracticeLondon, England: 19/7/17 - Nuvias, a rapidly growing, pan-EMEA, high value distribution business, today announced that it has achieved Platinum partner status in Oracle PartnerNetwork (OPN)...

Solaris, Java, have vulns that let users run riot

What's big, red and has 308 patches, 30 of them critical? Oracle's quarterly patch dump Oracle's emitted its quarterly patch dump.

As usual it's a whopper, with 308 security fixes to consider.…

Oracle Releases Biggest Update Ever: 308 Vulnerabilities Patched

Oracle's July Critical Patch Update included fixes for 308 vulnerabilities, 165 of which are remotely exploitable.

Oracle E-Business Suite Flaw Allows Downloads of Documents

Oracle today in its Critical Patch Update addressed a critical vulnerability in its Oracle E-Business Suite of business applications that allows for the download of business documents.

Threatpost News Wrap, July 14, 2017

Mike Mimoso and Chris Brook discuss the news of the week, includingnbsp;the Verizon breach, the Oracle session hijacking attack, a Telegram-based hacking tool, and a free EternalBlue scanner.

Vulnerabilities Expose Oracle OAM 10g to Remote Session Hijacking

Version 10g of Oracle Access Manager suffers from vulnerabilities that could allow an attacker to hijack sessions.

Perl devs solve ancient Riddle: ‘What’s a vuln we caught from...

BACKRONYM also fixed, so pull the patch The Perl 5 database interface maintainers have issued an important patch for DBDmdash;MySQL: in some configurations it wasn't enforcing encryption.…

Inoapps Drives Global Growth With New CFO And Senior Sales Appointments

Global Oracle Platinum Partner Inoapps (www.inoapps.com) has made two major appointments: Ally Rule as CFO and Mike Blackburn as UK VP of Sales.

The move reflects the significant global growth of the company across EMEA, the USA and ASEAN Territories.
In his new role as CFO (Chief Financial Officer), Ally Rule is responsible for managing the Grouprsquo;s financial risks and helping shape strategic and continued global growth, capitalising on the growing worldwide demand for Oracle... Source: RealWire