yanko-belov/code-craft

1

dont-repeat-yourself Use when writing similar code in multiple places. Use when copy-pasting code. Use when making the same change in mult…

yanko-belov/code-craft

95

2

lazy-loading Use when loading all data upfront. Use when initial page load is slow. Use when fetching data that might not be neede…

yanko-belov/code-craft

72

3

keep-it-simple Use when tempted to write clever code. Use when solution feels complex. Use when showing off skills instead of solvin…

yanko-belov/code-craft

65

4

separation-of-concerns Use when component does too many things. Use when mixing data fetching, logic, and presentation. Use when code is har…

yanko-belov/code-craft

60

5

fail-fast Use when handling errors. Use when tempted to catch and swallow exceptions. Use when returning default values to hide…

yanko-belov/code-craft

47

6

race-conditions Use when multiple operations access shared state. Use when order of operations matters. Use when "it works most of th…

yanko-belov/code-craft

47

7

single-responsibility-principle Use when creating or modifying classes, modules, or functions. Use when feeling pressure to add functionality to exis…

yanko-belov/code-craft

44

8

deadlock-prevention Use when acquiring multiple locks. Use when operations wait for each other. Use when system hangs without crashing.

yanko-belov/code-craft

43

9

composition-over-inheritance Use when tempted to use class inheritance. Use when creating class hierarchies. Use when subclass needs only some par…

yanko-belov/code-craft

41

10

aaa-pattern Use when writing tests. Use when test structure is unclear. Use when arrange/act/assert phases are mixed.

yanko-belov/code-craft

40

11

n-plus-one-prevention Use when fetching related data in loops. Use when seeing multiple queries for one request. Use when database is slow …

yanko-belov/code-craft

40

12

input-validation Use when accepting user input. Use when handling request data. Use when trusting external data without validation.

yanko-belov/code-craft

37

13

caching Use when same data is fetched repeatedly. Use when database queries are slow. Use when implementing caching without i…

yanko-belov/code-craft

36

14

error-responses Use when returning errors from APIs. Use when exposing internal errors. Use when error responses lack structure.

yanko-belov/code-craft

36

15

error-boundaries Use when deciding where to catch errors. Use when errors propagate too far or not far enough. Use when designing comp…

yanko-belov/code-craft

35

16

idempotency Use when creating mutation endpoints. Use when trusting frontend to prevent duplicates. Use when payments or critical…

yanko-belov/code-craft

35

17

skill-awareness Always active. Tracks usage of code-craft skills across sessions. Log skill applications to enable analytics and iden…

yanko-belov/code-craft

35

18

rest-conventions Use when designing API endpoints. Use when using wrong HTTP methods. Use when POST is used for reads.

yanko-belov/code-craft

34

19

immutability Use when modifying objects or arrays. Use when tempted to mutate function parameters. Use when state changes cause un…

yanko-belov/code-craft

33

20

you-aint-gonna-need-it Use when tempted to add features "for later". Use when building "production-ready" systems before needed. Use when ad…

yanko-belov/code-craft

33

21

dependency-inversion-principle Use when a class creates its own dependencies. Use when instantiating concrete implementations inside a class. Use wh…

yanko-belov/code-craft

32

22

test-driven-development Use when implementing any new feature or function. Use when asked to "add tests later". Use when writing code before …

yanko-belov/code-craft

32

23

secrets-handling Use when working with API keys, passwords, or credentials. Use when asked to hardcode secrets. Use when secrets might…

yanko-belov/code-craft

31

24

test-isolation Use when writing tests that share state. Use when tests depend on other tests. Use when test order matters.

yanko-belov/code-craft

31

25

auth-patterns Use when implementing authentication. Use when storing passwords. Use when asked to store credentials insecurely.

yanko-belov/code-craft

30

26

exception-hierarchies Use when creating custom exceptions. Use when error handling feels chaotic. Use when catch blocks are too broad or to…

yanko-belov/code-craft

30

27

law-of-demeter Use when accessing nested object properties. Use when chaining method calls. Use when reaching through objects to get…

yanko-belov/code-craft

30

28

open-closed-principle Use when adding new functionality to existing code. Use when tempted to add if/else or switch branches. Use when exte…

yanko-belov/code-craft

30

29

encapsulation Use when exposing internal state. Use when making fields public for convenience. Use when external code modifies obje…

yanko-belov/code-craft

29

30

interface-segregation-principle Use when designing interfaces. Use when implementing interfaces with methods you don't need. Use when forced to imple…

yanko-belov/code-craft

29

31

api-versioning Use when designing or modifying APIs. Use when adding breaking changes. Use when clients depend on API stability.

yanko-belov/code-craft

28

32

liskov-substitution-principle Use when creating subclasses or implementing interfaces. Use when tempted to override methods with exceptions or no-o…

yanko-belov/code-craft

28