People who weave the future with code are the sexiest souls of the 21st century

Late at 11:30 at night in an office building, programmer Xiao Wang stared at the characters on the screen. Hundreds of lines of code look like tangled threads, and every error message looks like it’s laughing at his clumsiness. This is the third time this week that he has been called in by his team leader to talk to him about code quality, and the Starbucks in his hand has long since cooled. At this moment he suddenly realized: to become a real software engineer, perhaps can not rely solely on the brute force of 996.

I. Seven keys to open the door to the world of code ### (1) the first golden key: the programming language of the leap of faith

When you stand at the crossroads of Java and Python, don’t listen to those marketing myths of "three days to become proficient in Go language" The greatest programmer of the 20th century, Goldner, said: "Premature optimization is the root of all evil". First choose C++ or Java a cutting-edge language deep plowing, you will find that many frameworks underlying are written in them. Just like learning calligraphy and practicing block letters first, the strongly typed nature of these languages will help you avoid a lot of low-level errors in the compilation phase.

(2) The three-dimensional maze of data structures

Imagine processing trillions of user profiles with a Python dictionary, and the system crashes in the blink of an eye. It requires understanding the delicate balance of red-black trees and mastering the temporal tradeoffs of heap sort. Nobel Prize winner Simon reveals in Man-Made Science that complex systems are built from simple elements. The efficiency of binary trees to organize data is the same as the mechanics of supporting cloth with umbrella bones on a rainy day.

(3) Databases: the grand masters of the digital world

You think learning CRUD is the end of the line? Ali’s OceanBase team in order to 0.1 milliseconds of query optimization, need to go deep into the B + tree index optimization. Just like the street office grid management in Chaoyang District, Beijing, how to make 1 billion data additions, deletions, checks and changes are kept at O(logN) complexity, is a must for every engineer.

II. The Triple Door from Lab to Production Environment

(1) Continuous Integration: The Time Corridor of Code

The CI/CD system on the top floor of the Tencent building in Shanghai works around the clock, completing the compilation and construction of millions of lines of code every five minutes. The automated testing system behind this is more sophisticated than an airport baggage sorting system. When you run "Hello World" locally with joy, the real challenge is just beginning.

(2) The Docker Image’s Wheel of Life

Like Lego blocks standardizing interfaces, container technology makes the development environment no longer quicksand at your fingertips. Last year’s double eleven, Jingdong is precisely relying on the K8s cluster second expansion top 320 million times / second traffic flood. Each of your image packaging, are in the hands of building a cloud fortress.

(3) The watchful eye of the APM system

New Oriental’s online classroom was once down for 12 minutes due to an uncaught NPE anomaly, resulting in a direct loss of over ten million dollars. When you salvage key clues in the ocean of logs, you will know that a distributed tracking system is more reliable than Sherlock Holmes’ magnifying glass. Every buried point is a prophetic prediction for the future.

III, 28 day metamorphosis route from bronze to king

The first week of the dawn plan: write an ATM system in Java that can self-check, and brush through 100 classic algorithmic questions in the Blue Bridge Cup question bank. Don’t be in a hurry to catch up, remember to use Git to record your growth track every day, and you’ll appreciate the restraint at this moment three months later.
Week 2 Icebreaker: Reconstructing the WeChat interface prototype on Inkblade. This real-time collaborative tool allowed a team of 00-year-olds from Beihang to build a smart elderly care app that won the gold medal at the Innovation and Entrepreneurship Competition in just 72 hours. remember: elegant interactions are worth a million lines of code.
Week 3 Moon Project: Deploy your first SpringBoot project on AliCloud ECS. The moment Nginx’s reverse proxy successfully penetrates the firewall, the feeling is even better than the feeling of being able to pass through the two chakras.

Week 4 Seal the Deal Moment: Launching a Self-Research System with JMeter to launch a 10,000-person pressure test on a homegrown system. The concentrated look in your eyes while observing the JVM memory curve is the most beautiful medal for a developer. At this moment, you have quietly stood on the steps of the conversation with BAT engineers.

"Code should be as elegant as prose, algorithms as subtle as sonnets. " — Margaret Hamilton (Architect of the Apollo Moon Landing System)
In an age where arithmetic is power, every byte of software development is reconfiguring what civilization looks like. While you’re saving today’s progress with Ctrl+S, somewhere someone is seeing a sea of stars because of your future work. When you open your IDE at this moment, your first line of comment should be: To the creators of the digital world in the 21st century.