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Concepts to review

(Or at least lightly familiarize yourself with...)

Core technologies

JavaScript

• pros and cons of JavaScript
• vs. other languages
• event loop
• scope and closures
• loops
• hoisting
• instantiation patterns
• truthy and falsy
• type coercion
• objects
  • prototypes
• this
• bind / currying
• Best practices
  • Short-circuiting
  • Switch / case
  • Ternary operator
  • Variables in for loops
  • Recursion call stacks
  • Namespacing
• ES6
  • let vs const vs var
  • arrow functions
  • promises
  • generators
  • iterators
  • for-of vs. for-in loop
  • classes
  • destructuring
  • string interpolation
  • modules
  • transpiling
  • Lesser-known
    • Maps / Sets
    • Proxies
    • Reflections
  • Augmented methods
    • Math
    • Number
    • Array
    • Object (especially Object.assign)
    • Strings and Unicode

HTTP

• HTTP requests and responses
• HTTP headers
• HTTP response codes
• HTTP basic auth
• What is a cookie?
• AJAX / JSONP
• ReST (and how it compares to SOAP, Graph, etc.)
• Asynchronous ReST

Databases

• What does "ACID compliant" mean?
• Database transactions
• Migrations
• ORMs

SQL databases

• Popular SQL databases and their differences

  • mySQL
  • PostgreSQL
  • Oracle
  • SQLite

• what is a "relational" database

• what's a B-Tree, and why does it matter for a database?

• Primary key vs foreign key

• Schema design

  • normalization
  • denormalization

• Basic select statements

• Joins

• Sub-selects

• Grouping

NoSQL databases

• MongoDB
  • why is Mongo useful, why it might suck
  • what's a "document database"? how does it work?
  • aggregation pipeline
  • Mongo indexing
  • BSON
• Memcache
• Redis
  • Serialized / Queued / Atomic transactions
  • why is Redis useful, why it might suck
  • the most-useful Redis data types
  • the most-useful Redis operations
• CouchDB
  • MapReduce
• LevelDB
• Cassandra
• Riak
• Neo4j
• HDFS / HBase with Hadoop

Browsers

• What is the DOM?
• How would you design the DOM, if you had to make it from scratch?
• Outline how browsers keep your data secure
• What is a virtual DOM?
• What happens when you load a page?
  • Async vs. Defer
  • Pagination and eager loading
• Event handling and bubbling
  • Event delegation

Regular expressions

Automation

• Grunt / Gulp

HTML

• semantic markup
• Responsive & Adaptive design
• block vs inline
• Client-side vs. server-side rendering
• templating
  • popular JS template engines
  • interpolation
  • control flow
• how is HTML rendered by the browser?
• what is "reflow"?
• accessibility

CSS

• what does "cascading" mean?
• how do you organize your stylesheets, and why?
• selectors
  • native JS selectors
  • jQuery selectors
• computing specificity
• pseudo-classes
• box model
• how does CSS help to make a responsive web app?
• CSS libraries
  • Bootstrap
  • Material-UI
  • Normalize.css and ResetCSS

Tools and Frameworks

Server

• Node
  • what is a server?
  • what is Node?
  • Streams
  • How does Node compare to other server-side technologies
  • why Node is useful, why it might suck
  • Useful packages
    • Node-inspector
    • Nodemon
• Express
  • vs. HAPI, Koa, and others
  • Middleware
  • Router

Client

• jQuery
• D3
• React
  • what is React?
  • compare React vs Angular
  • Flux / Redux
  • React Native
  • JSX
• Angular
  • What Is Angular?
  • Ionic
  • compare React vs Angular
  • Angular 1.x vs Angular 2
  • Typescript
• Backbone
  • what is Backbone?
  • why Backbone is useful, why it might suck
• Ember
  • what is Ember?
  • why Ember is useful, why it might suck

Code management

• git
  • git basics
  • git gotchas
  • why do people refer to "the SHA-1"?
  • merge vs rebase debate. where do you stand?
• GitHub

Package management

• apt-get
• brew
• npm

Dependency management

• Webpack
• Browserify
• nvm

Deployment

• AWS
• Digital Ocean
• Heroku

Concepts

Problem-solving

• problem decomposition
• Case-based reasoning
• Back-of-the-envelope
• "examplify"
• pattern-matching
• simplify then generalize
• Base case, then inductive reasoning
• How to apply scientific method to programming?

Programming paradigms

• imperative vs. declarative
• object-oriented
• functional programming
  • functors / monads
  • higher-order functions
  • lambda expressions
  • Reactive programming
• recursion
  • dynamic programming / memoization
  • Limiting the call stack

System design

• Client-server
• Workers
• Service-oriented architecture
• Multi-tier architecture
• MVC
  • MV* (pronounced "MV-star")
• asynchronous programming
  • callback hell
  • multi-threading
  • race condition
• Pub/sub
• Middleware
• ReST
  • HTTP "verbs"
  • CRUD
• what should you consider when you design an API?
• DRY (related to "single source of truth")
• single-responsibility principle
• idempotency
• loose coupling / separation of concerns
  • cohesion versus coupling
  • statelessness
    • "shared-nothing" architecture
• abstraction
• contracts (interfaces) between components
  • modules
  • classes
  • duck typing
  • data-hiding
  • interface versus implementation

Networking

• TCP/IP
• TCP vs. UDP
• ports
• socket
• WebRTC
• DNS
• HTTP
• HTTPS
• hostnames
• domains and subdomains
• how email works
• proxy
• reverse proxy
• load balancer
• MIME types
• URI
• CDN
• DDOS
• standards/RFC's
• what really happens when you upload a file?

Operationalizing / Productionizing your system

• Scaling
  • vertical scaling
  • horizontal scaling
  • sharding
  • caching
  • Database replication
• Monitoring
• Configuration management
• Branch management
• Release management

Project management

• Agile vs waterfall
• MVP

Testing and writing testable code

• Try / Catch
• Debugging with Chrome Dev Tools
• Black-box vs white-box
• Regression testing
• Unit testing vs integration testing
• Smoke-testing vs end-to-end testing
• Testing libraries
  • selenium
  • mocha, chai, etc
    • can you use these on the fly? no harness or setup provided...
• Continuous integration
  • online CI services
  • Jenkins
• Mocking & Stubbing
• How testing improves system design

Security

• Hashing vs encryption
• Authentication vs authorization
• Common encryption ciphers
• Public-Private Key Encryption
• oAuth
• Same-origin policy
• XSS
• CORS

Data structures

• Linked lists
• Strings
• Arrays
• Trees
  • Binary search tree
  • Trie
  • Heap
• Stacks
• Queues
  • FIFO vs LIFO
  • Dequeue
• Graphs
• Hash tables

Algorithms

• Big-O
• Search
• Sort
  • Bubble sort
  • Merge sort
  • Insertion sort
  • Quick sort
  • Radix sort
• Time and Space Complexity (Big O notation)

How computers work

• Memory
  • Speed of different data storage options
  • What does the OS really do when your program instantiates an object?
  • Memory management
    • What does "swapping to disk" mean? Why would you care?
    • Garbage collecting
  • Index / Search
• Binary stuff
  • Bit-twiddling
  • What are "floating point errors"?
• Code interpretation and compilation
• Call stacks
  • What is a stack overflow?
• common unix command line utilities
• How does the internet work
• What is the 'full stack'?