I keep asking myself What has changed? What am I missing on? Well...Was it not the same? Maybe, A quiet touch of musings Pondering over the vast ocean of thoughts Glad that it happened, that I took the first step What could be more worse than this? Where is the charm? Cheer up, dear Don't be so hard on self Reflect on with others Know Just that Time has changed So, shall we All *** Composed by Vinit Desai ***
What is Blockchain?
Blockchain is a decentralized and distributed system with details of digital records of transactions. The digital based ledger records are often referred to as blocks. The blocks of individual records are linked together like a chain. Hence it is collectively referred to as a blockchain.
The blockchain was invented by Satoshi Nakamoto for public transaction of bitcoin cryptocurrency.
What does a Blockchain contain?
Blockchain contains information about data i.e. relevant information about transaction, hash which is a unique code for the block, previous blocks hash. The first block which does not have previous block’s hash is called Genesis block. This series of information inside a block helps in tracking the history and difficult to modify the blockchain records hence adds security.
How transactions are done in blockchain?
For a blockchain the decision of adding the transaction to the chain is done by consensus and not by a single administrator as incase of centralized system. The majority of computers connected in the network have to validate the transaction. Also data that is available on blockchain network cannot be deleted from all systems as everybody in the network holds copy of blockchain records.
Uses of blockchain?
In cryptocurrency like bitcoin blockchain technology is very useful. Bitcoin eliminates the need of middle layer of banks and helps in asset to asset transfer as it is without the conversion of currency values based on location.
In real estate, the use of blockchain eliminates the need of notary. The records of real estates buying and selling gets recorded in the blockchain.
In hospital management system blockchain is used to record patients relevant data for doctors to access.
What is hashtag ?
Hashtag! well most of us know any word that begins with the pound(#) sign is a hashtag. Technically speaking, hashtag is a metadata i.e. information about data that is being posted on a social media or microblogging platforms.
Why is there a crazy trend to use a hashtag ?
The microblogging platforms such as twitter limit the content length to 280 characters. So hashtag becomes a way of conveying the message using limited characters to the followers and audience, in general. The hashtag is a tagging that helps in referencing the content and acts as a keyword for content search and categorization of similar content. The hashtags can be informal combination of words to make it more catchy and make it viral and trending, that is the fun part of it 🙂
Companies and businesses have been using hashtags as a cool way of advertising and promoting their products and services. Most social media platforms such as instagram, twitter, facebook, linkedin, pinterest etc. provide hashtag support for posts and hashtag based search to catch attention of its audience and get views. So apart from searching for people, products, influencers, companies we can also search with keywords, phrases etc.
How hashtag came into existence ?
Hashtag was first proposed by Chris Messina in a tweet in the year 2007 on twitter platform. In the beginning, only twitter had the support for hashtag concept but gradually other social media platforms included hashtag looking at the emerging trend and usage by netizens.
And the bubble has burst Again Fool! You fool! thought The battle of coronavirus, COVID-19 was over, with those Vaccines in your hat? But, let me remind It's not over yet Second wave or Tsunami Whatever you may call it Held in a big mess The world You and me And Everybody else Broke rules, some of our own Few of theirs So unwillingly but needily Introduced to Unusual isolated bitter shifts Of routine To be available Only online All the time Not an easy escape Working in frontline Indeed proved to be Lifeline Serving over time Loads and loads Men and women Many congratulations You have witnessed And survived Epidemic turned pandemic Through prolonging Tough times A little impatience, Casualness Among the masses Rises the spread Beyond control Lockdown, curfew Temporary buyback For time However bored, Burned out The desires unrest Along boundless zest With your each breathe Sanitize Mask Up Socially maintain distance Hold on, For yourself For the sake of Near and dear ones Please hold on It's a kind request Let's give it a tough fight *** Composed by Vinit Desai ***
This post in continuation to my earlier post which explains about Web cookie
There are types of web cookies namely
- Session cookie: They are created during a session of user, stored in a temporary memory. They do not have any expiration date and are deleted immediately as soon as the browser is closed. The other popular names of session cookie are non-persistent cookie, transient cookie, in-memory cookie.
- Persistent cookie: For this cookie, an expiration time is set. So, the cookie is deleted only at the expiration time and not deleted as soon as the browser is closed. They are used for maintaining session of the user. That is, once the user is logged into the website and if the user closes and reopens browser the cookie identifies if its a authorized user or not.
- First party cookie: This cookie is set by the website and the cookie information can be used for analytics of page views, number of logged in users etc.
- Third party cookie: Unlike first party cookie, this cookie is set by another website domain (not directly visited by user) whose plugins are used by the primary website.
- Secure cookie: This is a cookie with encrypted data which can be used over an encrypted HTTPS connection. They are useful in e-commerce and banking websites where the safety and security of transactions in the topmost priority.
What is a web cookie?
Web cookie or browser cookie is a small piece of information which is send from website server to be stored in a user’s browser. The user may store it in its computer which is basically used to identify the computer. That is, maintain stateful information so the next time, user visits the website or on the next request it can send back, the cookie that can have some kind of information about the user that the server can make use of to make certain decisions. Other purposes could be for instance, track user’s browser activity or remember login details, track site’s user count etc.
Who invented it?
The term was coined by web browser programmer who invented cookie Lou Montulli in the year 1994 while building an e-commerce website.
Why do we see the cookie banner pop up?
The reason why we see the cookie banner popping up recently across most websites is because of legal concerns in Europe and some other countries, the GDPR(General Data Privacy Regulation) requires that the cookie banners be displayed on website to let the users know that cookies are being used by the website.
Where is a cookie useful?
Its used in session management to manage session of the user in ecommerce website. Its used for personalization like the settings that were set and saved by the user and as said earlier, also used for tracking to improve the user experience as they say it 😉
What is digital footprint?
So, you are an active internet user. You have atleast one social media account and in some point of time have uploaded a photo, shared a video, have liked/commented on friend’s post. Also, the likes on a post, private chat messages, the online shopping search of your favourite brand etc. Aren’t these the activities we, as individual’s tend to do to be connected and engaged or in search of something online? In simple terms, all this content builds up what is called as digital footprint.
That means, digital footprint also referred as digital shadow is a content (text or audio or video) with a set of traceable digital activities of an individual on the digital devices or any internet platform. That is, the stuff what you leave behind when you use online services for online shopping, social networking etc.
Why should you be concerned about digital footprint?
Once you are logged into any website be it for online shopping or listening to a trending song, remember that web is secretly tracking all your actions allowing the targeted marketers to advertise exactly what products you have been browsing in you recent past. Also social media platforms often introduce new policies of usage that we may tend to accept just by clicking Accept/Ok button without actually reading the policies. User privacy is a concern.
All this data can be leaked to make a profit out of it for research in terms of marketing products and building it better for human convenience where a set of customers habits and user experience can be traced.
Can we avoid not being eavesdropped?
As suggested by one of my friend you may say as well, if privacy is a concern browse without login into websites, use browser’s incognito mode, clear browser history. That doesn’t solve the problem at base level as there is this loophole: every device has a unique IP address and uniquely the browsed content can be easily traced.
Hey Coffee, It is so innate That how bitter your taste But the roasted beans, for sure Blend well with the sweetness of sugar Frothed bubbles Hot and chilled, brewed and cold Aha! the aroma, nutty and chocolaty Cappuccino, latte, mocha, espresso and many It's lazy Sunday or Monday blues You are the reason to happily loose the snooze You have been just an excuse For the escape called "coffee-break" A witness of musings, witty, Head-to-head, Heart-to-heart coffee date chit-chats Apparently to be kept with a lid on Found in some pantries Are accidentally spilled coffee stories Unlike, others some Hello's end with See you over a cup of coffee, again! *** Composed by Vinit Desai ***
Growing up in a neighborhood that was with a mix of people with different religions and their respective culture brings back the vivid memories of today from the past, Christmas and the festivities that follow, the celebrations and preparations by young as well as old.
The kids were always excited about collecting items for Christmas tree, the crib, hut decoration, the list goes on with small statues of baby Jesus Christ, mother Mary, villagers, houses, dried grass, lighting, stars, shining balls, jingle bells and so on. Back then though, things were available readymade in the stores/market, unlike today, people believed in investing time in little things, call it a self-help or being self-reliant and satisfaction of doing their own decorations, however small or big. The afternoons a week before Christmas were spent mostly in the kitchen by women in preparing the sweet specialties with delicacies of mouth melting Dodol, Bebinca, the crispy Rose cookies, Kormolas etc.
Every locality had a group of zealous youngsters who hosted the celebrations which lasted till the new year and was open for public. The main attractions were the big hut with a unique scenery depicting Jesus’ birth and happiness all around, a big Star(bamboo stick make wrapped nicely with clean white cloth) with embossed “Wish you all a Merry Christmas” Christmas tree, big fat white Snow man, and an old man.
Most awaited daily evening game was the Housie(the game of numbers and luck), it could be bought as one ticket for two Rupees and three tickets for five Rupees. This game had two rounds, the first one was called “Jaldi Five”, which was over after calling out five random numbers from a glass jar and the next round went on till they got the winner. The last night that is the 31st December had special visitor Santa Claus, karol singing, games like treasure hunt and musical chair.
Here’s is to wishing all the readers a Merry Christmas! with these memoirs.
What is a Virtual Machine?
A Virtual Machine or a VM is a separate instance of operating system(OS) on a host physical computer in addition to host machine’s own OS, as if it were on a different computer or a guest. A host can emulate several guests, each of which can emulate different operating systems.
Host, guest and hypervisor
The computer that is running the virtual machine is called the host whereas the program that controls virtual machines is called a hypervisor. Virtual machines can be created through software known as virtualization software. Some of the popularly used virtualization softwares are Virtualbox and VMware.
What VMs offer its users?
A VM can be easily created, modified and destroyed. We can also create and delete snapshot on a VM. A snapshot preserves the state and data of a virtual machine at a specific point in time. VM provides the flexibility to create and delete snapshots which takes a few minutes of time.
With the popularity of cloud services, cloud-based VMs use is in demand which can be accessed over an internet using a web browser. These VMs are created on a physical machine which is located at a different geographical location, which can be accessed remotely and shared by multiple users(not in parallel though) in a larger organization to make the process more agile.