data types
collections, itertools, os
list, dict, set comprehension
function, lambda ....
scope
dataclasses
OOP principles
slots
dunder methods
Threads/multiprocessing/Async
concurrency/parallelism

Gil global inteperet lock
logging

Postgres
subquery, group by, all join
transaction, atomic transaction, view, trigger, partition, pl/pgsql



cashing
ttl , expire time
memory use in python, garbage collector, reference count

web protocol
http methods
how works web
websocket
graphql
cron

Big O notation
sorts (merge, quick, bubble, insert, select)
search (linear, binary)

context manager (custom), generator, decorator, iterator,
ci/cd, kanban
celery, redis, rabbitmq, elasticsearch

design patterns
OOP/SOLID/YAGNI/KISS
PUT with Patch
SCRUM
Sql/NoSql