Winerva Blog

Django Optimistic Locking (樂觀鎖定)

current in process record the version will be update += 1, so when in the same time another one do same thing will updated_rows == 0.

Django

Django Pessimistic Locking (悲觀鎖定)

when select task by id, the database lock the record. if other one to do same time the second one will get the “Task is already claimed or completed” We …

Django

Django Views

^: indicating the begin $: indicateing the last [0-9]{4}: 4 characters and each character is 0~9. (?P<by_date>…….), will pass the value as by_date parameter to the view. r preceding the …

Django

Use Docker-Compose to help Django Development

cd ~ mkdir practice_folder #create a virtualenv python -m venv .venv .venv\scripts\activate.bat pip install django~=4.0.0 psycopg2-binary~=2.9.9 django-admin startproject django_project . python manage.py runserver 0.0.0.0:8000 pip freeze > requirements.txt create a …

Docker

Use Docker to help Django Development

if you have pyenv Dockerfile, you can use docker built -t django:latest . to build a docker image. command: docker run –rm -p 8000:8000 -p 3000:3000 -v c:\Users\Fluber\Project\Docker\django\book_django_beginners\:/home/fluber/code -it django:latest …

Django

Dockerfile for pyenv environment

FROM ubuntu:20.04 ENV TZ = Asia\Taipei ENV DEBIAN_FRONTEND=noninteractive RUN apt-get update && \apt-get install -y \build-essential \libssl-dev \zlib1g-dev \libbz2-dev \libreadline-dev \libsqlite3-dev \wget \curl \llvm \libncurses5-dev \libncursesw5-dev \xz-utils \tk-dev \libffi-dev \liblzma-dev …

React-Native

Django Optimistic Locking (樂觀鎖定)

Django Optimistic Locking (樂觀鎖定)

Django Pessimistic Locking (悲觀鎖定)

Django Views

Use Docker-Compose to help Django Development

Use Docker to help Django Development

Dockerfile for pyenv environment

使用npx react-native init project的方式時，當加入@react-navigation/bottom-tabs時其圖示無法顯示的問題？

Java版本工具Sdkman

安裝nvm環境