SEARCH KEYWORD -- Data
Read 10 new books from O'Reilly for free
Recently O'Reilly provided free access to some books. Some of them are even in early release status. Here we recommend 10 of them. 1ã€Mastering Perl 2ã€Git Pocket Guide 3ã€Vagrant: Up and Running 4ã€High Performance Browser Networking 5ã€802.11ac: A Survival Guide 6ã€Test-Driven Development with Python 7ã€Interactive Data Visualization for the Web 8ã€HTML5 Canvas 9ã€Programming JavaScript Applications 10ã€Agile Data Source : http://linu...
O'Reilly,Free book,Early release 2013-07-03 07:56:20
Some tricks on PHP session
1. Session timeout problem There is a nuance we found with session timing out although the user is still active in the session. The problem has to do with never modifying the session variable. The GC will clear the session data files based on their last modification time. Thus if you never modify the session, you simply read from it, then the GC will eventually clean up. To prevent this you need to ensure that your session is modified within the GC delete time. You can accomp...
PHP,Session,Timeout,Solution,Various domain 2015-03-13 07:05:37
I've moved again
I've surprised myself and made another career change. I had a great time at Google, met lots of interesting people, but I met some folks outside doing something completely outrageous, and after much anguish decided to leave Google.I'm now at a small startup called Liquid Robotics They have a growing fleet of autonomous vehicles that rove the ocean collecting data from a variety of onboard sensors and uploading it to the cloud. The robots have a pile of satellite uplink/GSM/WiMax commun...
James Gosling,Google,Liquid Robotics,Aut 2011-08-31 08:59:39
Understanding How is Data Stored in RDBMS
We all know that DBMS (database management system) is used to store (a massive amount of) data. However, have you ever wondered how is data stored in DBMS? In this post, we will focus on data storage in RDBMS, the most traditional relational database systems. Physical Storage Data can be stored in many different kinds of medium or devices, from the fastest but costy registers to the slow but cheap hard drives, or even magnetic tapes. Nowadays, IaaS providers such as AWS...
“Experience says it allâ€- Pentaho ETL Developers’ Comment on the Use of ETL Tools
Since months Pentaho ETL developers have been juggling with three distinct tools- Pentaho DI, SSIS, and PowerShell. Their experience has provided them new perspective on the cons and pros of every tool. In this post, they are sharing their experience with these tools and explain their significance. Before getting started, they first would like to explain ETL in brief and how the tools suits ETL landscape. ETL is Extract Transform Load. Informatica was the initial ETL tool introduced in the mid n...
Pentaho BI ETL tools 2015-05-13 01:14:57
Set up Superset on ubuntu 16.04 LTS
Apache Superset (incubating) is a modern, enterprise-ready business intelligence web application. Compared with business-focused BI tool like Tableau, superset is more technology-navy. It supports more types of visualization and able to work in distributed manner to boost the query performance. Most importantly, it is free of charge! An example dashboard: Let’s go and set it up. Create a virtualenv Assume Anaconda is installed for python management. # create a virtualenv with python 3.6 co...
Remote form submission
Remote form submission is way of submitting HTML forms from local to a particular remote server. This is used by many advertisers, spammers or even hackers to submit bad data to other websites in order to get what they want. They can write some automation scripts to help them do spamming. How can people do remote form submission and how to prevent this kind of attacks? Since a website can be accessed by almost every one, so one can save a local copy of a HTML form of a website through File->S...
PHP,Security,Remote form submission 2013-07-14 01:04:49
Which Type of IT Career is Best For You?
Considering the growth of the information technology job market, a career in IT is an incredibly smart career move. A career in IT can mean many things – you can become a network administration, website developer, database specialist, programmer or engineer. The job range is vast and can suit various personalities and levels of technical skill. Having a good insight into those job profiles is key to make the right decision about your career path. Here's a selection of some of the mos...
Going Simple with JavaScript
I was making a change to a page that needed to pull from a remote API and make changes to various parts of the page. Sounds like the time to pull out jQuery and Ajax, doesn't it? Instead, I just used old fashioned JavaScript. Actually, I used new fashioned JavaScript. Browsers haven't stood still in the advent of libraries and frameworks. As a result, we can take advantage of those features when we need to bake in a little extra. Some JSONP The first step was to get the JSONP call execu...
JavaScript,new version,new addition,JSONP,querySelectorAll 2012-03-06 05:22:59
Hadoop or Spark: Which One is Better?
What is Hadoop? Hadoop is one of the widely used Apache-based frameworks for big data analysis. It allows distributed processing of large data set over the computer clusters. Its scalable feature leverages the power of one to thousands of system for computing and storage purpose. A complete Hadoop framework comprised of various modules such as: Hadoop Yet Another Resource Negotiator (YARN MapReduce (Distributed processing engine) Hadoop Distributed File System (HDFS) Hadoop Common Thes...
COMPARISON,HADOOP,SPARK 2018-11-22 07:08:57
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