tag:blogger.com,1999:blog-42232633476644658552024-09-04T19:44:28.004+05:30Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.comBlogger35125tag:blogger.com,1999:blog-4223263347664465855.post-77356852796469272592013-05-31T15:21:00.001+05:302013-05-31T15:21:19.275+05:30

There are three types of people in this world: those who make things happen, those who watch things happen and those who wonder what happened. A person without a sense of humor is like a wagon without springs, jolted by every pebble in the road. Seven days without laughter make one weak. If raising children was going to be easy, it never would have started with something called labour. Women

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-82196405815826749372011-07-12T11:26:00.004+05:302011-07-12T15:43:17.302+05:30

Black holes are where God divided by zero.Coincidence is God's way of remaining anonymous.It is not that I'm so smart. But I stay with the questions much longer.The hardest thing in the world to understand is the income tax.Reality is merely an illusion, albeit a very persistent one.Science is a wonderful thing if one does not have to earn one's living at it.The only thing that interferes with my

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-10855998193717123482011-05-24T09:00:00.006+05:302011-05-24T11:08:38.373+05:30

What's ScribeScribe is developed and open sourced by facebook. Its their internal logging system, capable of logging 10s of billions of messages per day. These messages include access logs, performance statistics, actions and many others. Scribe is a server for aggregating log data that's streamed in real time from clients. It is designed to be scalable and reliable. It is designed to scale to a

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com3tag:blogger.com,1999:blog-4223263347664465855.post-61965298283228876852011-05-23T13:33:00.003+05:302011-05-23T14:18:22.827+05:30

We all know that logging is necessary and we do log a lot of different types of data on a regular basis. Data like user transactions, customer behaviour, machine behaviour, security threats, fraudulent activities etc etc. Historically, logs were mostly a tool for troubleshooting problems. But more recently, they have become important for network and system performance optimization, recording user

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-65824788427453575472011-03-10T10:17:00.002+05:302011-03-10T10:23:13.780+05:30

I bought a samsung Galaxy 3 phone few months back. It came with android 2.1 (Eclair). Soon after I got my phone I heard a news that samsung is going to release galaxy 3 froyo update and it will reach to the users within 2 to 3 months. After waiting for more than 5 months I finally decided to upgrade the OS on my phone by myself. So I searched on the internet and got some steps to do so. I

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-7552164395753296462011-02-15T11:29:00.004+05:302011-02-15T11:41:55.662+05:30

What is Phing Phing is a build system for php projects, like Ant is for java. Moreover phing is based on Apache Ant. Like any traditional build systems you can do a lot of things with Phing. Phing uses XML build files similar to ant build files. Phing is useful in cases where you have to write custom scripts for testing, packaging and deploying your application code. Phing provides a number of

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-88137414792144999092011-02-09T12:34:00.000+05:302011-02-09T12:34:52.585+05:30

Few days back I was checking one of my mysql server's settings. I found that there are a number of timeout settings. Since I am using mysql for last few years, I am well aware of wait_timeout and connect_timeout variables. As if you are using mysql in production then in most of the cases you have to tune these two variables. But Mysql provides a number of other timeout variables also.  

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-39404256958068416322011-02-07T12:35:00.001+05:302011-02-07T15:23:14.514+05:30

What is mysql_pconnect(): The main purpose of using mysql_pconnect() function is to maintain a persistent connection to the mysql server. A persistent connection is a connection that do not get closed even after the excecution of the script is over which opened the connection. Even function mysql_close() can't close a persisitent connection. In contrast a normal connection opened using

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-85073899252226834762011-02-06T11:52:00.000+05:302011-02-06T11:52:46.813+05:30

ऊँचे पहाड़ पर, पेड़ नहीं लगते, पौधे नहीं उगते, न घास ही जमती है। जमती है सिर्फ बर्फ, जो, कफ़न की तरह सफ़ेद और, मौत की तरह ठंडी होती है। खेलती, खिलखिलाती नदी, जिसका रूप धारण कर, अपने भाग्य पर बूंद-बूंद रोती है। ऐसी ऊँचाई, जिसका परस पानी को पत्थर कर दे, ऐसी ऊँचाई जिसका दरस हीन भाव भर दे, अभिनंदन की अधिकारी है, आरोहियों के लिये आमंत्रण है, उस पर झंडे गाड़े जा सकते हैं, किन्तु कोई गौरैया, वहाँ

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-66040986532437891542011-02-04T22:56:00.001+05:302011-02-05T21:40:06.773+05:30

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-27563942112472852572011-02-03T12:35:00.002+05:302011-02-04T09:57:20.332+05:30

If electricity comes from electrons, does morality come from morons? Save earth, this is the only planet where you get girls :) The problem doesn't lie with me.... the problem lies with your expectations. Be nice to nerds, chances are you'll end up working with one. SEX is not the answer. SEX is the question and YES is the answer!! Heaven won't take me and hell's afraid I'll take over. A

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com1tag:blogger.com,1999:blog-4223263347664465855.post-10825536274746830672011-02-03T09:00:00.001+05:302011-02-03T09:00:01.087+05:30

In the part 5 of this series, I am going to explain how to Comment/Uncomment a code block in VIM editor. Method 1 Add folowing lines in your ~/.vimrc file func! PhpUnComment() range     let l:paste = &g:paste     let &g:paste = 0     let l:line        = a:firstline     let l:endline &

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-49777258657055970892011-02-02T15:24:00.002+05:302011-02-04T09:58:41.852+05:30

Here are some of my favourite quotes, I collected them over a period of time, not in any particular order. Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in beer. -Dave Barry Imagination was given to man to compensate him for what he is not; a sense of humor to console him for what he is. -Francis

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com1tag:blogger.com,1999:blog-4223263347664465855.post-25807668822819632342011-02-02T09:00:00.011+05:302011-02-03T10:19:40.315+05:30

In this part 4 of this series, I am going to discuss CodeSniffer and its integration with VIM editor. What is CodeSniffer CodeSniffer is a code analysis tool. This tool allows you to check your php code against a coding standard. It allows you to apply a set of rules (standard) to your source code. These rules can be used to detect common programming errors. It can also be used to define a set

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-13921583263020205202011-02-01T10:56:00.001+05:302011-02-03T10:20:21.597+05:30

In the part 1 and part 2 I talked about some useful vim settings and how to enable autocompletion in vim. In this part I am going to talk about a very useful plugin written by Tobias Schlitt, for generating comment blocks or docblocks for php scripts. We do document our code with proper inline comments. To make this task easier, Tobias Schlitt wrote a VIM plugin which automatically lookup some

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-68732993971654631382011-02-01T10:00:00.006+05:302011-02-10T15:20:03.547+05:30

In the first part I talked about some useful settings, In this part I am going to explain how to use Autocompletion with VI editor. To set autocompletion on, add the following settings in .vimrc file in your home directory or alternatively you can add them to /etc/vim/vimrc file, that will enable these settings for all users on the system.    set ofu=syntaxcomplete Vim has

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-60449781801976610452011-01-31T10:55:00.001+05:302011-02-03T10:21:20.111+05:30

Here are some useful settings, commands and plugins to make VI editor more developer friendy (some settings are there only for PHP users). You need to add the following settings in .vimrc file in your home directory or alternatively you can add them to /etc/vim/vimrc file, that will enable these settings for all users on the system. "For highlighting the code add  syntax on "Show a ruler

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-22914695984960435292011-01-26T19:00:00.003+05:302011-01-26T20:31:30.419+05:30

In the first part of this post I compared the performance of Insert operations for mongoDB and mysql. In this part I tried to compare the performance for different select operations. Test setup is same as used in the part 1.1. Selects on an indexed column with different limit clausesTo check the performance of selects on an indexed column with limit clause, a number of queries with different

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-36532430103050368282011-01-26T10:00:00.002+05:302011-01-26T15:13:25.651+05:30

Recently I started exploring NoSQL databases as an alternative for some of our high traffic mysql tables. After going through a number of articles on net, I decided to explore MongoDB. I tried to compare the performance of different database operations (inserts/ different types of selects) in mongoDB and in MySQL. Performance comparison of insert operations are given here.Test setup:For testing I

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-57386641380312498792011-01-25T13:29:00.018+05:302011-01-25T15:12:26.660+05:30

NoSQL databases can be broadly classified as:1. Distributed vs. Not-distributed databasesDistributed databases take the responsibility of data partitioning (for scalability) and replication (for availability) and do not leave that to the client. Non-distributed databases leaves the responsibility of data partitioning and replication on the clients.Table 1: Distributed and Non-distributed

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Multi Version Concurrency Control or MVCC is an efficient method to let multiple processes access the same data in parallel without corrupting the data and the possibility of deadlocks. It is an alternative to the Lock based approaches, where every process first has to request an exclusive lock on a data item, before it can be read or updated. MVCC is used in some relational databases as well as

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-75224788737948149972010-12-21T14:42:00.003+05:302011-03-09T09:26:26.767+05:30

Thrift is a software framework for scalable cross-language services development. Thrift allows you to define data types and service interfaces in a simple definition file. Taking that file as input, the compiler generates code to be used to easily build RPC clients and servers that communicate seamlessly across programming languages.This post provides a step by step guide to install thrift and

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-74166606900946208832010-12-10T19:07:00.001+05:302011-01-30T19:20:09.972+05:30

What is NoSQL For a quarter of a century, the relational database (RDBMS) has been the dominant model for database management. In the past, relation databases were used for nearly everything. Because of their rich set of features, query capabilities and transaction management they seemed to be fit for almost every possible task one could imagine to do with a database. But their feature

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-39149870368380024972010-11-24T10:00:00.002+05:302011-02-17T16:46:26.639+05:30

Hashing is a common method of mapping a key to a location. This is useful for many things, but in more relevant terms, this can be used to map keys to a server with great effect. Simple hashing use a Key mod N algorithm, where K is the number of keys and N is the number of slots or servers. This ensures that keys are mapped evenly across N slots. The problem with this algorithm is that adding or

Anonymoushttp://www.blogger.com/profile/09016958813589950372noreply@blogger.com0tag:blogger.com,1999:blog-4223263347664465855.post-82605093274281345132010-11-23T12:50:00.000+05:302011-01-27T14:42:24.648+05:30

A database system is said to be in a consistent state if it satisfies all known integrity constraints. Integrity is defined as `the accuracy or correctness of data in the database`. There are two famous types of integrity constraints:1. Entity integrity constraints (for example, no primary key value can be null)2. Referential integrity constraints (a field in one table which refers to another

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