For more than two decades, every time you opened a website you were using almost the same protocol designed back in the 1970s. TCP and HTTP/1.1 got the job done, but at the cost of time and resources:...
When several computers cooperate as a single system —a cluster— the biggest problem is neither speed nor storage: it is making all of them reach the same conclusion. If one node says the new value is ...
Every time you open a padlocked website, your browser and the server run a handshake protocol: an exchange of messages that agrees how to encrypt data before a single useful byte travels. For two deca...
For years the web had a single verb: ask and wait. You opened a page, the server answered, and the conversation was over. But chat, live quotes, notifications, or collaborative boards need something d...
Every time an AI assistant wants to query your database, read a file, or run an action, until recently it needed a bespoke API for each service. The Model Context Protocol (MCP) was born to end that T...
When two people edit the same document at the same time —a cloud document, a Figma board, a distributed chat—, what stops each person’s last write from stepping on the other’s and losing w...
Almost everything that holds your data today lives on more than one machine at once. And the moment several machines appear, an uncomfortable problem shows up too: they disagree. One server says the c...
Every running program believes it owns all of the machine’s memory for itself. That is not a marketing trick: this “illusion” is virtual memory, and without it modern operating syste...
You run SELECT * FROM pedidos WHERE cliente_id = 2421 and, depending on the table, the answer takes an instant or several seconds. The only meaningful difference between the two cases is usually a str...
You have an 800-page novel in front of you. You compress it with gzip and it takes up a quarter of the space. Not a single letter has disappeared: decompressing returns the exact text. What actually h...
Every time you open a large app, you are not connecting to a single machine but to hundreds of servers sharing the load. For your session and your data to always appear where they belong, those machin...
When a graphics chip (GPU) runs a program, it does not do exactly what a CPU does but faster. It does something qualitatively different: it duplicates one thread of execution hundreds of times and lau...












