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USBrett
 

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  1. USBrett
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    <p>System architect by day, full time geek.</p> <p>I have been fortunate enough to work with some cutting edge technology on almost a daily basis, working with a skilled and dedicated team. Its a great environment to work in, and find I learn many new things daily. The last 5 years of working in a team on a really exciting project has been extremely fulfilling, helping thousands (and soon millions) of people make better investment decisions, by providing powerful tools to manage their portfolio's.</p> <p>Technology is awesome and an endless learning curve, and I have the awesome opportunity of playing with, on almost a daily basis, technology such as:</p> <h2>Software</h2> <ul> <li>App servers (ejb, servlet containers) - JBoss, tomcat</li> <li>web services - Apache (mod_jk / mod_proxy), node</li> <li>HA: heartbeat + ldirector (ipvs), AWS ELB, HA service configuration with mysql, http, app servers, aws, node, mongo, redis, hazelcast, etc.</li> <li>AWS - network design and configuration (e.g. vpc, auto scaling, custom ami's, focus on security)</li> <li>databases - mysql, mongo</li> <li>caches - redis, hazelcast</li> <li>splunk (for web analytics, application troubleshooting and system monitoring)</li> <li>Jira administration</li> </ul> <h2>Development</h2> <ul> <li>java, ejb</li> <li>node (javascript)</li> <li>scala (unfiltered, akka)</li> <li>php</li> <li>builders: ant / ivy, gradle, maven, sbt (and custom plugin development for the latter 3).</li> </ul> <h2>Infrastructure</h2> <ul> <li>CI (hudson / jenkins, Go by Thoughtworks)</li> <li>Monitoring: nagios, cacti (snmp), zabbix, monit, sim, splunk (its that good it can be mentioned twice)</li> <li>SVN, git</li> <li>network services: network design, dhcp, dns, routing, smtp (DKIm configuration, spf, anti relay, bulk mailing, transactional services).</li> <li>security: Firewalling (iptables, cisco, aws)</li> <li>VPN: openvpn, IPSec (openswan, cisco, aws)</li> <li>configuration management: puppet, kickstart (with pxeboot)</li> <li>virtualization: aws, xen (with libvirt).</li> </ul> <h2>Marketing &amp; analytics</h2> <ul> <li>Google Analytics</li> <li>Splunk (it has so many applications)</li> <li>awstats, webalyzer, etc.</li> </ul> <h2>Methodology</h2> <ul> <li>traditional SDLC: requirements -> design -> develop -> test -> deploy &amp; reassess. Source code branching and tagging, release.</li> <li>agile (scrum approach) - rapid continuous deployment</li> </ul>
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    1. POExpress "Can't set headers after they are sent" for a file download
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    2. POAsynchronous nodejs module exports
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    2. PONodejs - create a readable stream from an object
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    1. COThanks vinayr. REPL should work great.
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    2. COBeen playing around with my actual use-case, and nconf loads fine if nconf.file() is called with a non-existent file, so for now I don't need a solution. But am still interested in the approach.
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    3. COAfter some additional debugging, I seem to have found the cause of the issue - it seems to be an issue with state in the application - the "myPdfBuilder" library is a custom PDF builder using PDFKit. It looks like the "myPdfBuilder.buildPdf" function is called multiple times on the second request, looks like the first instance is still in memory. I should probably refactor it to a class.
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      1. USBrett
 

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