https://linhfish.dev/en/2026/10/24/flask-security-5-9-2-ra-mat-sua-loi-passkey-bo-phu-thuoc-humanize-kiem-tra-truoc-khi-nang-cap/ 2026-10-24T15:28:41Z Linh Fish Dev vi Flask-Security 5.9.2 ra mắt: sửa lỗi passkey, bỏ phụ thuộc humanize — kiểm tra trước khi nâng cấp 2026-10-24T15:28:36Z Blog https://linhfish.dev/en/2026/10/24/building-an-expense-tracker-with-django-17-dockerize-dockerfile-docker-compose-web-postgresql-redis/ 2026-10-24T15:15:41Z Linh Fish Dev vi Building an Expense Tracker with Django #17: Dockerize — Dockerfile + docker-compose (web, PostgreSQL, Redis) 2026-10-24T15:13:16Z Blog https://linhfish.dev/en/2026/10/24/django-sync-a-stale-object-with-refresh_from_db-in-5-minutes/ 2026-10-24T15:07:03Z Linh Fish Dev vi Django: Sync a Stale Object with refresh_from_db() in 5 Minutes 2026-10-24T15:04:26Z Blog https://linhfish.dev/en/2026/10/24/django-rest-framework-pick-the-right-serializer-per-action-with-get_serializer_class-in-5-minutes/ 2026-10-24T14:56:19Z Linh Fish Dev vi Django REST Framework: Pick the Right Serializer per Action with get_serializer_class() in 5 Minutes 2026-10-24T14:55:01Z Blog https://linhfish.dev/en/2026/10/24/flask-create-secure-email-confirmation-tokens-with-itsdangerous-in-5-minutes/ 2026-10-24T14:46:10Z Linh Fish Dev vi Flask: Create Secure Email Confirmation Tokens with itsdangerous in 5 Minutes 2026-10-24T14:44:41Z Blog https://linhfish.dev/en/2026/10/24/fastapi-block-host-header-attacks-with-trustedhostmiddleware-in-5-minutes/ 2026-10-24T14:36:15Z Linh Fish Dev vi FastAPI: Block Host Header Attacks with TrustedHostMiddleware in 5 Minutes 2026-10-24T14:35:32Z Blog https://linhfish.dev/2026/10/24/quan-ly-chi-tieu-voi-django-17-dockerize-dockerfile-docker-compose-web-postgresql-redis/ 2026-10-24T13:55:46Z Linh Fish Dev vi Quản lý chi tiêu với Django #17: Dockerize — Dockerfile + docker-compose (web, PostgreSQL, Redis) 2026-10-24T13:28:57Z Blog https://linhfish.dev/2026/10/24/linh-fish-dev-podcast-11-chan-host-header-attack-bang-trustedhostmiddleware-trong-5-phut/ 2026-10-24T12:39:02Z Linh Fish Dev vi Linh Fish Dev Podcast #11: Chặn Host header attack bằng TrustedHostMiddleware trong 5 phút 2026-10-24T12:39:00Z Blog https://linhfish.dev/2026/10/24/django-dong-bo-lai-object-da-loi-thoi-bang-refresh_from_db-trong-5-phut/ 2026-10-24T12:20:54Z Linh Fish Dev vi Django: đồng bộ lại object đã lỗi thời bằng refresh_from_db() trong 5 phút 2026-10-24T12:10:31Z Blog https://linhfish.dev/2026/10/24/fastapi-0-151-0-gui-null-khong-con-duoc-hieu-la-dung-mac-dinh-kiem-tra-ngay-truoc-khi-nang-cap/ 2026-10-24T12:10:10Z Linh Fish Dev vi FastAPI 0.151.0: gửi null không còn được hiểu là "dùng mặc định" — kiểm tra ngay trước khi nâng cấp 2026-10-24T12:10:08Z Blog https://linhfish.dev/2026/10/24/django-rest-framework-chon-serializer-theo-action-bang-get_serializer_class-trong-5-phut/ 2026-10-24T07:38:40Z Linh Fish Dev vi Django REST Framework: chọn serializer theo action bằng get_serializer_class() trong 5 phút 2026-10-24T07:38:38Z Blog https://linhfish.dev/2026/10/24/fastapi-0-162-0-checkbox-bo-trong-khong-con-tu-thanh-false-kiem-tra-ngay-truoc-khi-nang-cap/ 2026-10-24T07:25:01Z Linh Fish Dev vi FastAPI 0.162.0: checkbox bỏ trống không còn tự thành False — kiểm tra ngay trước khi nâng cấp 2026-10-24T07:24:59Z Blog https://linhfish.dev/2026/10/24/flask-tao-token-xac-nhan-email-an-toan-bang-itsdangerous-trong-5-phut/ 2026-10-24T07:29:59Z Linh Fish Dev vi Flask: tạo token xác nhận email an toàn bằng itsdangerous trong 5 phút 2026-10-24T07:24:23Z Blog https://linhfish.dev/2026/10/24/cve-2026-111497-node2shell-loi-brotli-vuot-mat-node-js-hai-package-python-bi-anh-huong-cap-nhat-brotli-1-2-1-ngay/ 2026-10-24T01:17:07Z Linh Fish Dev vi CVE-2026-111497 (Node2Shell): lỗi Brotli "vượt mặt" Node.js — hai package Python bị ảnh hưởng, cập nhật Brotli 1.2.1 ngay 2026-10-24T01:17:05Z Blog https://linhfish.dev/2026/10/24/fastapi-chan-host-header-attack-bang-trustedhostmiddleware-trong-5-phut/ 2026-10-23T23:14:54Z Linh Fish Dev vi FastAPI: chặn Host header attack bằng TrustedHostMiddleware trong 5 phút 2026-10-23T23:14:53Z Blog https://linhfish.dev/en/2026/10/23/building-an-expense-tracker-with-django-16-write-api-tests-with-apitestcase/ 2026-10-23T16:24:03Z Linh Fish Dev vi Building an Expense Tracker with Django #16: Write API Tests with APITestCase 2026-10-23T16:21:36Z Blog https://linhfish.dev/en/2026/10/23/django-rank-rows-right-in-sql-with-window-functions-skip-the-python-loop-in-5-minutes/ 2026-10-23T16:04:15Z Linh Fish Dev vi Django: Rank Rows Right in SQL with Window Functions — Skip the Python Loop in 5 Minutes 2026-10-23T16:02:20Z Blog https://linhfish.dev/2026/10/23/wagtail-8-1-rc1-ra-mat-api-v3-gio-viet-duoc-du-lieu-ho-tro-python-3-15-va-chia-tay-python-3-10/ 2026-10-23T15:52:20Z Linh Fish Dev vi Wagtail 8.1 RC1 ra mắt: API v3 giờ viết được dữ liệu, hỗ trợ Python 3.15 và chia tay Python 3.10 2026-10-23T15:52:18Z Blog https://linhfish.dev/en/2026/10/23/fastapi-accept-html-form-data-with-form-end-422-errors-when-the-frontend-sends-forms-instead-of-json-in-5-minutes/ 2026-10-23T15:43:56Z Linh Fish Dev vi FastAPI: Accept HTML Form Data with Form() — End 422 Errors When the Frontend Sends Forms Instead of JSON in 5 Minutes 2026-10-23T15:39:21Z Blog https://linhfish.dev/en/2026/10/23/flask-read-and-validate-the-json-body-the-right-way-no-more-html-error-pages-from-request-get_json-in-5-minutes/ 2026-10-23T15:21:58Z Linh Fish Dev vi Flask: Read and Validate the JSON Body the Right Way — No More HTML Error Pages from request.get_json() in 5 Minutes 2026-10-23T15:20:19Z Blog https://linhfish.dev/en/2026/10/23/python-call-multiple-apis-in-parallel-with-asyncio-gather-and-semaphore-in-10-minutes/ 2026-10-24T01:52:09Z Linh Fish Dev vi Python: Call Multiple APIs in Parallel with asyncio.gather and Semaphore in 10 Minutes 2026-10-23T14:57:56Z Blog https://linhfish.dev/2026/10/23/quan-ly-chi-tieu-voi-django-16-viet-test-cho-api-apitestcase/ 2026-10-23T13:16:41Z Linh Fish Dev vi Quản lý chi tiêu với Django #16: Viết test cho API (APITestCase) 2026-10-23T13:16:39Z Blog https://linhfish.dev/2026/10/23/linh-fish-dev-podcast-10-goi-nhieu-api-song-song-bang-asyncio-gather-va-semaphore-trong-10-phut/ 2026-10-24T00:56:49Z Linh Fish Dev vi Linh Fish Dev Podcast #10: Gọi nhiều API song song bằng asyncio.gather và Semaphore trong 10 phút 2026-10-23T12:34:59Z Blog https://linhfish.dev/2026/10/23/wagtail-va-5-lo-hong-bao-mat-trong-ban-8-0-1-7-4-4-va-7-0-10-kiem-tra-phien-ban-ngay-hom-nay/ 2026-10-23T11:10:33Z Linh Fish Dev vi Wagtail vá 5 lỗ hổng bảo mật trong bản 8.0.1, 7.4.4 và 7.0.10: kiểm tra phiên bản ngay hôm nay 2026-10-23T11:10:31Z Blog https://linhfish.dev/2026/10/23/django-xep-hang-ngay-trong-sql-bang-window-function-khoi-vong-lap-python/ 2026-10-23T09:04:22Z Linh Fish Dev vi Django: xếp hạng ngay trong SQL bằng Window function, khỏi vòng lặp Python 2026-10-23T09:04:20Z Blog https://linhfish.dev/2026/10/23/fastapi-nhan-du-lieu-form-html-bang-form-het-loi-422-khi-frontend-gui-form-thay-vi-json-trong-5-phut/ 2026-10-23T07:06:45Z Linh Fish Dev vi FastAPI: nhận dữ liệu form HTML bằng Form() — hết lỗi 422 khi frontend gửi form thay vì JSON trong 5 phút 2026-10-23T07:06:44Z Blog https://linhfish.dev/2026/10/23/pydantic-ai-va-3-lo-hong-bao-mat-chi-trong-2-ngay-ban-2-58-0-va-2-59-0-ai-xay-ai-agent-nen-nang-cap-ngay/ 2026-10-23T05:12:10Z Linh Fish Dev vi Pydantic AI vá 3 lỗ hổng bảo mật chỉ trong 2 ngày: bản 2.58.0 và 2.59.0 — ai xây AI agent nên nâng cấp ngay 2026-10-23T05:12:09Z Blog https://linhfish.dev/2026/10/23/flask-doc-va-validate-json-body-dung-cach-het-canh-api-tra-loi-html-voi-request-get_json-trong-5-phut/ 2026-10-23T03:11:49Z Linh Fish Dev vi Flask: đọc và validate JSON body đúng cách — hết cảnh API trả lỗi HTML với request.get_json() trong 5 phút 2026-10-23T03:11:47Z Blog https://linhfish.dev/2026/10/23/fastapi-0-160-0-161-1-parameter-model-extraforbid-gio-quet-ca-field-ngoai-model-kiem-tra-ngay-truoc-khi-nang-cap/ 2026-10-23T01:15:50Z Linh Fish Dev vi FastAPI 0.160–0.161.1: parameter model extra="forbid" giờ "quét" cả field ngoài model — kiểm tra ngay trước khi nâng cấp 2026-10-23T01:15:48Z Blog https://linhfish.dev/2026/10/23/python-goi-nhieu-api-song-song-bang-asyncio-gather-va-semaphore-trong-10-phut/ 2026-10-24T01:44:56Z Linh Fish Dev vi Python: gọi nhiều API song song bằng asyncio.gather và Semaphore trong 10 phút 2026-10-22T23:12:25Z Blog https://linhfish.dev/en/2026/10/23/expense-tracking-with-django-15-optimize-queries-with-select_related-prefetch_related/ 2026-10-22T19:00:11Z Linh Fish Dev vi Expense Tracking with Django #15: Optimize Queries with select_related/prefetch_related 2026-10-22T18:56:26Z Blog https://linhfish.dev/en/2026/10/23/flask-enable-cors-safely-with-flask-cors-whitelist-origins-in-5-minutes/ 2026-10-22T18:39:23Z Linh Fish Dev vi Flask: Enable CORS Safely with Flask-CORS — Whitelist Origins in 5 Minutes 2026-10-22T18:36:19Z Blog https://linhfish.dev/en/2026/10/22/fastapi-ditch-the-deprecated-orjsonresponse-speed-up-json-responses-with-return-type-annotations-in-5-minutes/ 2026-10-22T17:02:59Z Linh Fish Dev vi FastAPI: Ditch the Deprecated ORJSONResponse — Speed Up JSON Responses with Return Type Annotations in 5 Minutes 2026-10-22T16:47:06Z Blog https://linhfish.dev/en/2026/10/22/django-combine-querysets-with-union-intersection-difference-in-5-minutes-stop-concatenating-lists-in-python/ 2026-10-22T15:39:32Z Linh Fish Dev vi Django: Combine Querysets with union()/intersection()/difference() in 5 Minutes — Stop Concatenating Lists in Python 2026-10-22T15:35:48Z Blog https://linhfish.dev/2026/10/22/fastapi-0-157-0-0-159-1-gop-parameter-models-tai-su-dung-khai-bao-query-header-cookie-va-form-giua-cac-endpoint/ 2026-10-22T15:14:16Z Linh Fish Dev vi FastAPI 0.157.0–0.159.1: gộp parameter models — tái sử dụng khai báo query, header, cookie và form giữa các endpoint 2026-10-22T15:14:15Z Blog https://linhfish.dev/en/2026/10/22/django-block-dirty-data-at-the-database-level-with-checkconstraint-and-uniqueconstraint-in-5-minutes/ 2026-10-22T15:15:03Z Linh Fish Dev vi Django: Block Dirty Data at the Database Level with CheckConstraint and UniqueConstraint in 5 Minutes 2026-10-22T15:11:40Z Blog https://linhfish.dev/2026/10/22/quan-ly-chi-tieu-voi-django-15-toi-uu-query-voi-select_related-prefetch_related/ 2026-10-22T13:15:16Z Linh Fish Dev vi Quản lý chi tiêu với Django #15: Tối ưu query với select_related/prefetch_related 2026-10-22T13:15:14Z Blog https://linhfish.dev/2026/10/22/linh-fish-dev-podcast-9-django-chan-du-lieu-ban-ngay-o-tang-database-bang-checkconstraint-va-uniqueconstraint-trong-5-phut/ 2026-10-22T12:50:12Z Linh Fish Dev vi Linh Fish Dev Podcast #9: Django: chặn dữ liệu bẩn ngay ở tầng database bằng CheckConstraint và UniqueConstraint trong 5 phút 2026-10-22T12:50:10Z Blog https://linhfish.dev/2026/10/22/python-phat-hanh-khan-cap-3-15-1-3-14-9-3-13-17-cap-nhat-pip-va-certifi-ngay-khong-can-cai-lai-python/ 2026-10-22T11:12:50Z Linh Fish Dev vi Python phát hành khẩn cấp 3.15.1, 3.14.9, 3.13.17: cập nhật pip và certifi ngay, không cần cài lại Python 2026-10-22T11:12:49Z Blog https://linhfish.dev/2026/10/22/flask-bat-cors-an-toan-bang-flask-cors-origins-credentials-trong-5-phut/ 2026-10-22T09:49:23Z Linh Fish Dev vi Flask: bật CORS an toàn bằng Flask-CORS — origins, credentials trong 5 phút 2026-10-22T09:49:21Z Blog https://linhfish.dev/2026/10/22/vercel-cho-phep-viet-routing-middleware-bang-python-chan-va-dieu-huong-request-ngay-truoc-khi-cham-app-fastapi-flask-django/ 2026-10-22T09:32:31Z Linh Fish Dev vi Vercel cho phép viết Routing Middleware bằng Python: chặn và điều hướng request ngay trước khi chạm app FastAPI, Flask, Django 2026-10-22T09:32:30Z Blog https://linhfish.dev/2026/10/22/fastapi-bo-orjsonresponse-da-deprecated-tang-toc-json-response-bang-return-type-annotation-trong-5-phut/ 2026-10-22T07:07:57Z Linh Fish Dev vi FastAPI: bỏ ORJSONResponse đã deprecated — tăng tốc JSON response bằng return type annotation trong 5 phút 2026-10-22T07:07:55Z Blog https://linhfish.dev/2026/10/22/litellm-1-107-0-bi-danh-cap-pipeline-phat-hanh-malware-danh-cap-credential-song-tren-pypi-suot-gan-2-gio/ 2026-10-22T06:19:19Z Linh Fish Dev vi LiteLLM 1.107.0 bị "đánh cắp" pipeline phát hành: malware đánh cắp credential sống trên PyPI suốt gần 2 giờ 2026-10-22T06:05:02Z Blog https://linhfish.dev/2026/10/22/django-gop-queryset-bang-union-intersection-difference-trong-5-phut-het-canh-cong-list-trong-python/ 2026-10-22T03:32:07Z Linh Fish Dev vi Django: gộp queryset bằng union()/intersection()/difference() trong 5 phút — hết cảnh cộng list trong Python 2026-10-22T03:32:05Z Blog https://linhfish.dev/2026/10/22/django-chan-du-lieu-ban-ngay-o-tang-database-bang-checkconstraint-va-uniqueconstraint-trong-5-phut/ 2026-10-22T00:39:29Z Linh Fish Dev vi Django: chặn dữ liệu bẩn ngay ở tầng database bằng CheckConstraint và UniqueConstraint trong 5 phút 2026-10-22T00:39:27Z Blog https://linhfish.dev/en/2026/10/22/building-an-expense-tracker-with-django-14-import-bank-statements-from-csv/ 2026-10-21T19:51:51Z Linh Fish Dev vi Building an Expense Tracker with Django #14: Import Bank Statements from CSV 2026-10-21T19:47:18Z Blog https://linhfish.dev/en/2026/10/22/django-fix-a-freezing-admin-page-when-foreignkey-has-thousands-of-records-with-autocomplete_fields-in-5-minutes/ 2026-10-21T19:28:18Z Linh Fish Dev vi Django: Fix a Freezing Admin Page When ForeignKey Has Thousands of Records with autocomplete_fields in 5 Minutes 2026-10-21T19:11:59Z Blog https://linhfish.dev/en/2026/10/22/flask-organize-views-with-methodview-no-more-if-request-method-chains/ 2026-10-21T18:33:53Z Linh Fish Dev vi Flask: Organize Views with MethodView — No More if request.method Chains 2026-10-21T18:32:10Z Blog https://linhfish.dev/en/2026/10/22/fastapi-serve-files-safely-with-fileresponse-block-path-traversal-in-5-minutes/ 2026-10-21T17:42:20Z Linh Fish Dev vi FastAPI: Serve Files Safely with FileResponse — Block Path Traversal in 5 Minutes 2026-10-21T17:40:26Z Blog