Simon Willison’s Weblog

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Thursday, 29th March 2018

Use The Index, Luke! Paging Through Results (via) The best explanation of keyset pagination I’ve seen. Keyset pagination is where instead of using OFFSET/LIMIT to return the next page of results you instead track the last seen value in the column you sort by and then return the next X results that follow it. This allows you to paginate to arbitrarily deep offsets within a table, whereas OFFSET/LIMIT requires first iterating across all preceding rows and tends to stop working well after the first few thousand results.

# 5:30 pm / sql

Watching companies gradually realize "blockchain is just super expensive consensus and only makes sense for untrusted counterparties" is a wild, expensive trip

Kyle Kingsbury

# 9:25 pm / blockchain

The original Reddit source code, written in Lisp in 2005 (via) “If anyone’s interested, I found a hard drive in my garage with the original Reddit Lisp code from 2005. Been looking for it for years. Enjoy.”—spez

# 10:13 pm / lisp, reddit

import-pypi. A devious Python 3 hack which abuses importlib.machinery to add a hook such that any time you type “import modulename” it checks to see if the module is installed and runs “pip install modulename” first if it isn’t. Intended as a joke, but if you habitually fire up temporary virtual environments for exploratory programming like I do this could actually be a neat little time-saver.

# 10:16 pm / pypi, python, virtualenv

2018 » March

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