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Adam Garcia adamgarcia4

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@adamgarcia4
adamgarcia4 / gist:863f278a06ad4f33e7e730e59b76b869
Created July 24, 2026 15:20
Service Java-to-Go Port — Plan
Owner — WatchTower platform engineering
Status — Draft
Design refs — Data layer re-architecture, Rules engine HLD, Capacity estimate, Pipeline category mapper
Tasks — see TASKS.md
TL;DR
Replace apps/service with one Go codebase and one image, but run that image in independently scalable api, ingest, rules, and projection roles.
Keep PostgreSQL as the durable source of truth and preserve the current REST, SSE, gRPC, Kafka, Valkey, and database contracts until parity tests prove a deliberate change.
Port by deep module, not Java class: bronze consumption, silver projection, pipeline evaluation, rules, query, and realtime each own a small interface and a named table set.
The highest-value throughput work is database and execution-path work: micro-batching, exact per-partition cursors, conflict-driven idempotency, an incremental-FSM fast path, set-based rules, durable outboxes, incremental gold projection, and bounded concurrency.
@adamgarcia4
adamgarcia4 / dsa-coding-challenge-k8s-hpa-candidate.md
Last active July 20, 2026 19:27
k8s-coding-question.md

DSA Coding Challenge — Kubernetes Horizontal Scaling Algorithm

Background

Kubernetes has a built-in Horizontal Pod Autoscaler (HPA) that watches a metric — like requests per second — and scales the number of replicas up or down to keep the metric at a target level. For example, if your target is 100 RPS per pod and you're seeing 400 RPS total, you want 4 replicas. If you're seeing 50 RPS total, you'd want 1 — but never below your configured minimum.

You're going to implement the core scaling decision as a pure function. No Kubernetes API calls — just math and bounds enforcement.

Problem Statement

@adamgarcia4
adamgarcia4 / codingTutorialStart.js
Last active April 18, 2023 22:08
// Write an application that tells us which ticker has a greater open price
const getExpensiveStock = async () => {
console.log("============ START ===========")
// Problem Decomposition
// 1. Define Names of Stocks to pull
const ticker1 = undefined
const formattedTicker1 = ticker1
const ticker2 = undefined
const formattedTicker2 = ticker2
@adamgarcia4
adamgarcia4 / codingTutorialFinal.js
Last active April 18, 2023 22:07
const { restClient } = require("@polygon.io/client-js");
const rest = restClient("rt65BvAyd7yr219qQ7M9pHIe7qosYdwl");
const getOpenPrice = async (ticker) => {
if (ticker === 'GOOG') {
return 1000
}
if (ticker === 'AAPL') {
@adamgarcia4
adamgarcia4 / Zod-to-openAPI Express Middleware
Created December 19, 2022 00:45
const swaggerValidationMiddleware =
(routeConfig: ISwaggerParams) => {
const AdditionalResponses: { [statusCode: string]: ResponseConfig } = {
422: {
description: 'Invalid input',
content: {
'application/json': {
schema: z.object({
code: z.string(),
message: z.string(),
@adamgarcia4
adamgarcia4 / test.mp3
Last active May 18, 2021 13:19
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@adamgarcia4
adamgarcia4 / config3.json
Created April 8, 2021 12:38
{
"licenseKey":"552258f2-1f24-43f9-914a-de3c4ff21b88",
"devtools_port":9090,
"runtime":{
"arguments":"",
"version":"18.87.55.19",
"fallbackVersion":"",
"futureVersion":""
},
"platform":{
@adamgarcia4
adamgarcia4 / config.json
Created February 2, 2021 11:05
{
"licenseKey": "552258f2-1f24-43f9-914a-de3c4ff21b88",
"devtools_port": 9090,
"runtime": {
"arguments": "",
"version": "18.87.55.19",
"fallbackVersion": "",
"futureVersion": ""
},
"platform": {
@adamgarcia4
adamgarcia4 / config4.json
Last active September 14, 2021 08:56
{
"licenseKey": "552258f2-1f24-43f9-914a-de3c4ff21b88",
"devtools_port": 9090,
"runtime": {
"arguments": "",
"version": "18.87.55.19",
"fallbackVersion": "",
"futureVersion": ""
},
"platform": {
@adamgarcia4
adamgarcia4 / Amazon OA Problem
Last active January 19, 2021 21:51
from collections import defaultdict
def getAdjList(numNodes, fromList, toList):
adjList = [[] for _ in range(numNodes + 1)]
for u, v in zip(fromList, toList):
adjList[u].append(v)
adjList[v].append(u)
return adjList