From 3a6fef6192ecf3165a3e8c398495bcc7cd4460db Mon Sep 17 00:00:00 2001
From: Rui Hildt <rui@protonmail.com>
Date: Fri, 20 Mar 2020 15:52:21 +0000
Subject: [PATCH] Add tech research

---
 research.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 research.md

diff --git a/research.md b/research.md
new file mode 100644
index 0000000..55464ce
--- /dev/null
+++ b/research.md
@@ -0,0 +1,17 @@
+
+## Proposed Tech stack
+- NodeJS
+- Express
+- Postgresql
+- Luxon
+
+## How to deal with date and time in PostgreSQL?
+- use `datetime` datatype without timezone (datetime with timezone is using offset, which doesn't work well with DST)
+- store datetime in UTC
+- add timezone information separately, use `Full time zone name` (human friendly)
+- use `ISO 8601` format, which is human friendly to read and supported by every library
+
+
+See:
+- https://www.moesif.com/blog/technical/timestamp/manage-datetime-timestamp-timezones-in-api/
+- https://www.postgresql.org/docs/current/datatype-datetime.html
\ No newline at end of file