Mathieu Acthernoene zoontek

Just documenting docs, articles, and discussion related to gRPC and load balancing.

https://github.com/grpc/grpc/blob/master/doc/load-balancing.md

Seems gRPC prefers thin client-side load balancing where a client gets a list of connected clients and a load balancing policy from a "load balancer" and then performs client-side load balancing based on the information. However, this could be useful for traditional load banaling approaches in clound deployments.

https://groups.google.com/forum/#!topic/grpc-io/8s7UHY_Q1po

gRPC "works" in AWS. That is, you can run gRPC services on EC2 nodes and have them connect to other nodes, and everything is fine. If you are using AWS for easy access to hardware then all is fine. What doesn't work is ELB (aka CLB), and ALBs. Neither of these support HTTP/2 (h2c) in a way that gRPC needs.

useSubscription and useMutableSource¹ tearing and deopt behavior.

Mounting a new tree

The tree below represents a React application mounting. During mount, two components read from an external, mutable source. The first one (List) reads version 1 of that data and the second one (Item) reads version 2.

Deopt

`useSubscription` (legacy mode)

N/A.

This gist lists challenges you run into when building offline-first applications based on IndexedDB, including open-source libraries like Firebase, pouchdb and AWS amplify (more).

Note that some of the following issues affect only Safari. Out of the major browsers, Chrome's IndexedDB implementation is the best.

Backing file on disk (WAL file) keeps growing (Safari)

When this bug occurs, every time you use the indexeddb, the WAL file grows. Garbage collection doesn't seem to be working, so after a while, you end up with gigabytes of data.

Random exceptions when working with a large number of indexeddb databases (Safari)

Node.js 18 Test Runner

Node.js v18 introduces test runner support. This currently experimental feature gives developers the benefits of a structured test harness for their code without having to install a third party test framework, like Mocha or Jest, as a dependency. Using the test runner produces [TAP] output.

The [online reference] provides the most up-to-date, authoritative reference and have plenty of good testing examples. However, there are a few points that might not be immediately obvious from the reference, so those are highlighted here.

ChatGPT Resources

Context

ChatGPT appeared like an explosion on all my social media timelines in early December 2022. While I keep up with machine learning as an industry, I wasn't focused so much on this particular corner, and all the screenshots seemed like they came out of nowhere. What was this model? How did the chat prompting work? What was the context of OpenAI doing this work and collecting my prompts for training data?

I decided to do a quick investigation. Here's all the information I've found so far. I'm aggregating and synthesizing it as I go, so it's currently changing pretty frequently.

	(function (context, trackingId, options) {
	const history = context.history;
	const doc = document;
	const nav = navigator \|\| {};
	const storage = localStorage;
	const encode = encodeURIComponent;
	const pushState = history.pushState;
	const typeException = 'exception';
	const generateId = () => Math.random().toString(36);
	const getId = () => {

	/**
	* OnLayout is built upon: View (and ResizeObserver), StyleSheet
	*/

	const elementBreakpoints = {
	small: { minWidth: 200 },
	medium: { minWidth: 300 }
	large: { minWidth: 500 }
	};

	import { ApolloClient, QueryOptions, MutationOptions } from 'apollo-client';
	import { DocumentNode } from 'graphql';

	import { getSdk, Requester } from '.generated/schema-typedefs';
	import { ApolloRequestError } from './ApolloRequestError';

	export type ApolloRequesterOptions<V, R> =
	\| Omit<QueryOptions<V>, 'variables' \| 'query'>
	\| Omit<MutationOptions<R, V>, 'variables' \| 'mutation'>;

	#!/bin/sh
	set -e

	# 查杀/恢复 CleanMyMac 的流氓后台 HealthMonitor
	#
	# - 执行脚本后，原 HealthMonitor.app 会被备份并被空目录替代，然后杀掉后台进程（你直接杀是杀不净的）。此时 CleanMyMac 主应用也不能运行。
	# - 再次执行脚本，则将备份的文件恢复回去，CleanMyMac 则可以正常使用。
	#
	# NOTE: 如果不是 Setapp 版本，进程名可能不同，需要自行修改下面变量：

	import { Model } from 'objection';

	export default class TaxRateModel extends Model {
	countryCode!: string;
	stripeId!: string;

	static tableName = 'tax_rate';
	}