Computing and tech
Every Explorer is yours to handle freely, with no questions and no clock, and leads to the decks that help you review what you saw.
Workshops
The object workshop
Classes, objects and messages
The framework laid bare
Who is in charge: your code or the framework?
The mutant hunt
Write the tests that kill the mutants
The quality board
The quality standard, accident by accident
The page workshop
HTML and CSS rendered for real
The leaky shop
Attack the shop, then close it
The phone laid bare
What the phone in your hand measures
The chart workshop
Data, a mark, scales
Under the lens
Frames opened down to the byte
The SQL sandbox
A real database, real queries
Two sessions
Two transactions, an order to choose
The normalisation workshop
From dependencies to normal forms
The indicator desk
Measures, dimensions and grain
The cube in hand
Roll up, drill down, slice, pivot
The cipher workshop
Encrypt, then break the cipher
The chain of trust
Protected exchanges to break
Labs
The test bench
Cost class, size and machine
The image lab
Resolution, colours and kernels
The debt lab
Refactor or ship: what debt costs
The interface lab
Fitts and Hick, measured on you
The speed lab
What delays a page's display
The self-healing network
Costs, failures and reconvergence
Traffic under pressure
Servers, cache and queues under load
The cluster
Why doubling machines is not enough
The elasticity lab
An instance group facing a day
A neuron by hand
Two weights, a bias, a boundary
Terminals and machines
Step by step
Your program, line by line
The structure workshop
Lists, trees, heaps and sorts step by step
The Git sandbox
Real commands, three areas and a graph
The bare machine
Memory, registers and flags in sight
The terminal
A Linux machine to drive
The interleaver
Become the scheduler
The server's night
Prepare a server's night
Four stores, one dataset
The same data in four stores
The container sandbox
Real docker commands, a drawn host
The cluster
Desired state, observed state
Graphs to draw
The shock wave
One change, and everything it touches
The little network
A ping followed frame by frame
The network under siege
Filtering rules against four attacks
The delivery line
Build your line, push commits
The failure simulator
Cause the failure, keep your promise
The automaton workshop
Draw an automaton, make it read words
Decision trees
The client interview
Five clients, five specifications
The organisation's directory
An organisation's directory, entry by entry
The on-call night
A production database, six incidents
In the attacker's shoes
Five intrusions, and where to cut them
Systems in slow motion
Protocols in action
TCP, DNS, TLS, HTTP, OAuth…
The architecture sandbox
Servers, cache, load balancer
Curves and scatter plots
The point box
Put points, watch the boundary
The whole world fits in an Explorer.
Free: the whole library, unlimited reviews, no ads. See pricing