Daniel Zurawski danielzurawski

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Working from home

danielzurawski / dynamodb-throttled-batch-update.js

Last active August 26, 2022 14:05

DynamoDB batch update using Bluebird for async concurrency and a rate limiter

	/*
	A small node.js script utilising bluebird, node-rate-limiter and aws-sdk to achieve optimal DynamoDB UpdateItem throughput for a provided DDB write capacity / per second

	When would this be useful?

	Sadly, aws-sdk does not automatically throttle, it just blows up with ProvisionedThroughputExceededException.

	So let’s say, you want to update millions of records in Dynamo using the Update operation, without BatchWriteItem which only allows Puts and you want to avoid generating Insert events.
	Additionally, you want it to go as fast as your DDB configuration (without burst) allows, but not any faster.
	*/

danielzurawski / gist:6214628

Created August 12, 2013 20:08

fiz-with-book

	(defn fiz-with-book
	[look {[x y] :pos}]
	(let [move (look [x (inc y)])
	move-up [x (dec y)]
	move-down [x (inc y)]
	move-left [(dec x) y]
	move-right [(inc x) y]]
	(cond (nil? (look move-up)) {:pos move-up}
	(nil? (look move-left)) {:pos move-left}
	(nil? (look move-down)) {:pos move-down}

danielzurawski / datacentres.json

Created August 21, 2012 10:05

D3.js Azimuthal, orthographic projection with pretty bubbles

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danielzurawski / CleanDroid.java

Created April 25, 2012 18:18

CleanDroid Main Class

	/*
	* To change this template, choose Tools \| Templates
	* and open the template in the editor.
	*/
	package com.cleandroid;

	import java.awt.BorderLayout;
	import java.awt.Dimension;
	import java.awt.FlowLayout;
	import java.awt.Toolkit;