InnoDev

One glaring constant in your career is that the technology you'll use for your craft will regularly change. When this happens you have a choice: hold on to what you know or become an early adopter, exploring the next thing. It's the early adopters who take the early lead towards mastering the newest tools will have a greater chance of wining the race for new client opportunities.

Brutalna stranka obsahujuca kopec infogragik, linkov, toolov, slideov ohladom performance monitoring a tuning na Linuxe

There are multiple vulnerabilities in ImageMagick, a package commonly used by web services to process images. One of the vulnerabilities can lead to remote code execution (RCE) if you process user submitted images. The exploit for this vulnerability is being used in the wild.

World Wide Web Consortium (W3C) zahájilo nový projekt, v jehož rámci se bude pracovat na standardizaci alternativních metod autentizace - tedy jiných, než téměř všude používaných hesel. Na projektu bude spolupracovat FIDO Alliance, která se o něco podobného snaží už skoro tři roky a která má víc než dvě stě členů. Nechybí mezi nimi velké technologické nebo finanční společnosti. Asociace už připravila návrh API FIDO 2.0, který se v rámci W3C bude podrobněji zkoumat a připomínkovat. Mezi nejatraktivnější alternativní metody v současnosti patří hlavně autentizace pomocí otisků prstů.

Refactor until you feel you are one step behind the solution you want. Avoid your comfort zone. And while you might see extractions that would probably get you to a better design, don't apply them until you see the need two or three different times. Remember that duplication is cheaper than the wrong abstraction. The best refactors will then naturally arise from the repeated inconveniences, instead of from unbacked ideas of what could potentially be better.

Workplace stress costs the U.S economy hundreds of billions of dollars per year and is prevalent across all types of organizations and workplaces. If you have adopted or are in the process of adopting the devops methodology and culture, chances are your software developers are burning out as well.

If you've been-there-done-that and you're now building your dream home with your retirement fund, this post really isn't for you. Congratulations are in order. But if, like me, you find yourself getting older and still can't resist the desire to keep coding and building things, then read on.

A list of Ruby gems that have memory leaks

Matz is experimenting with three concepts that may or may not be included in Ruby 3.0. 1. Man-machine collaboration through a static analyzer (e.g. rubocop or ruby-lint) that uses soft typing (i.e. inferred typing) to determine if a program will crash or not. 2. Performance enhancements through JIT compilation, but preliminary implementations have shown to increase memory consumption as a side effect. 3. Concurrency improvements through better abstractions like streams and pipelines. When used, the running program would place itself inside an event loop, disable the GIL, and force objects to be immutable. Matz calls it Rube Goldberg Programming.

Pomocka pri pisani rychlejsieho Ruby kodu. V ramci moznosti... :o)

I've never met a developer who complained about code getting faster or taking up less RAM. In Ruby, memory is especially important, yet few developers know the ins-and-outs of why their memory use goes up or down as their code executes.

paradny writeup use caseov, kedy je vhodne pouzit sqlite DB

This is a game built with machine learning. You draw, and a neural network tries to guess what you're drawing. Of course, it doesn't always work. But the more you play with it, the more it will learn.

MALLOC_ARENA_MAX - starting with GLIBC Version 2.10 and higher, a new feature has emerged to help address memory locations and proximity to processor cores. Prior to this feature, everything stayed within one memory pool, so the data didn't get "closer" to the cores. . However, we have discovered that when fully utilized in CentOS/RHEL 6.x, this functionality can also generate negative side effects as excessive memory utilization.

Adam Harvey je umelec a výskumník žijúci v Berlíne, ktorý sa vo svojom diele zaoberá dopadom sledovacích technológií. Je autorom projektov ako CV Dazzle, kamufláž pred počítačovým videním; Stealth Wear, "anti-dronová" móda, či The Privacy Gift Shop, online trhovisko pre umenie namierené proti sledovaniu. Harvey učí kurz o vplyve sledovacích technológií na Newyorskej univerzite.

New Elastic Volumes Today we are launching a new EBS feature we call Elastic Volumes and making it available for all current-generation EBS volumes attached to current-generation EC2 instances. You can now increase volume size, adjust performance, or change the volume type while the volume is in use. You can continue to use your application while the change takes effect.

Web/app projects these days often have many distributed parts. It's not uncommon for groups to use the right tool for the job. The right tools are often something like the choice below. Redis for queuing, and caching. Elastic Search for searching, and log stash. Influxdb or RRD for timeseries. S3 for an object store. PostgreSQL for relational data with constraints, and validation via schemas. Celery for job queues. Kafka for a buffer of queues or stream processing. Exception logging with PostgreSQL (perhaps using Sentry) KDB for low latency analytics on your column oriented data. Mongo/ZODB for storing documents JSON (or mangodb for /dev/null replacement) SQLite for embedded. Neo4j for graph databases. RethinkDB for your realtime data, when data changes, other parts 'react'. ... For all the different nodes this could easily cost thousands a month, require lots of ops knowledge and support, and use up lots of electricity. To set all this up from scratch could cost one to four weeks of developer time depending on if they know the various stacks already. Perhaps you'd have ten nodes to support. Could you gain an ops advantage by using only PostgreSQL?

I was playing a bit with OrientDB because the licensing model is not that pricey as for Neo4j. Anyway, after having really bad experience (http://orientdbleaks.blogspot.com/) I returned back to CouchDB, although it's not a graph db. But while I was searching for more data, I found this: http://www.aptuz.com/blog/is-postgres-nosql-database-better-than-mongodb/ and this: https://www.arangodb.com/2015/10/benchmark-postgresql-mongodb-arangodb/ so I'm pondering with an idea to give postgres(no)sql a chance :)

PostgreSQL is an open source multi-purpose relational database system which is widely used throughout the world. It is one huge system with the integrated subsystems, each of which has a particular complex feature and works with each other cooperatively. Although understanding of the internal mechanism is crucial for both administration and integration using PostgreSQL, its hugeness and complexity prevent it.

Learn how security is designed into Google's technical infrastructure. Google uses this infrastructure to build its internet services, including both consumer and enterprise services.