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AWS S3 Basics for Beginners
Introduction In the previous articles, we explored AWS networking concepts like: VPC Subnets Internet Gateway Security Groups Route 53 Now, let's move to one of the most popular AWS services: Amazon S3 (Simple Storage Service) Amazon S3 is one of the easiest AWS services to learn and one of the most widely used services in real-world applications. Almost every application stores some kind of data: Images Videos Documents Log files Backups Static websites Amazon S3 helps us store and retrieve these files securely from anywhere in the world. In this article, we will understand: What Amazon S3 is Buckets and Objects Benefits of S3 Storage Classes Versioning Basic security concepts Static website hosting overview Why Do We Need Storage? Imagine you are running an online photo-sharing application. Users upload: Profile pictures Photos Videos Where should these files be stored? Keeping them directly inside application servers is not a good idea because: Storage is limited. Scaling becomes difficult. Replacing servers may cause data loss. This is where Amazon S3 helps. What is Amazon S3? Amazon S3 stands for: Simple Storage Service It is a cloud-based object storage service provided by AWS. S3 allows us to: Store data Retrieve data Manage data from anywhere using the internet. Amazon S3 is designed to be: Highly available Durable Scalable Secure Cost-effective Real-World Example Think of Amazon S3 as a digital warehouse. Suppose you own an e-commerce company. Inside your warehouse, you store: Product images Invoices Customer documents Videos Similarly, Amazon S3 stores digital files safely in the cloud. Buckets and Objects Amazon S3 stores data using two concepts: Bucket A bucket is a container used to store files. Think of a bucket like a folder. Examples: company-documents customer-images application-logs Bucket names must be globally unique. Object Anything stored inside a bucket is called an Object . Examples: invoice.pdf profile.jpg backup.zip video.mp4 Objects can co
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AWS Adds Multi-Region Replication to Amazon Cognito Identity Service
AWS recently introduced Amazon Cognito multi-region replication, which automatically replicates user identities and user pool configurations from a primary region to a secondary one. This enables applications to continue authenticating users from a replica region during outages, without requiring custom replication and failover mechanisms. By Renato Losio
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Google Open Knowledge Format: Why Enterprise Agents Need a Knowledge Layer, Not Just More Tools
Google Open Knowledge Format: Why Enterprise Agents Need a Knowledge Layer, Not Just More Tools Most enterprise AI conversations still start in the wrong place. They start with the model. Which model should we use? Which framework should we adopt? Which vendor has the best agent platform? Which tools should we connect next? These are fair questions. But in real enterprise architecture, they are not the hardest questions. The harder question is this: Can our AI systems actually understand how our business works? That is why Google Cloud’s article on Open Knowledge Format caught my attention. The article talks about a simple but important idea: representing knowledge in a way that humans can read and machines can use. In OKF, that means markdown for the content and structured metadata for context. At first glance, that may sound too simple. But that simplicity is the point. Enterprises do not need another place where knowledge goes to die. We already have enough portals, catalogs, wikis, dashboards, folders, and internal tools. What we need is a practical way to package knowledge so it can be reviewed, versioned, governed, searched, and reused by both people and AI agents. That is where this idea becomes very relevant for agentic AI. The Real Enterprise AI Problem Most organizations already have the knowledge their AI agents need. They have it in databases, dashboards, tickets, architecture notes, runbooks, Confluence pages, data catalogs, code comments, incident reports, old project documents, and the heads of experienced employees. The issue is not that knowledge does not exist. The issue is that it is fragmented. Some of it is outdated. Some of it is duplicated. Some of it is tribal. Some of it is locked inside tools. Some of it is written for humans but not structured enough for AI systems to use reliably. This becomes a serious problem when we move from AI assistants to AI agents. An assistant can give a helpful answer. An agent does more. It plans, selects tools
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Building a World Cup Bracket Picker with AWS Blocks
AWS just launched AWS Blocks, an open-source TypeScript framework that gives you backend capabilities...
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What Beginners Get Wrong About IT Certifications
Certifications help when they match a role and are backed by proof — not as a scoreboard. The problem Beginners are told certifications are the key to IT, so they buy the most popular one, pass it, and are surprised when interviews still go badly. A certificate proves you can pass an exam; it does not, on its own, prove you can do the job. Why this matters now Certifications remain useful signals, and official providers like CompTIA, Microsoft, AWS, Cisco and Google keep their exam objectives public and current. But as AI makes it easier to grind practice questions, employers lean harder on whether you can actually apply the knowledge. The value of a certificate is increasingly in what you can demonstrate alongside it. There is also a cost reality. Exams, courses and retakes add up in money and time, and career changers usually have limited amounts of both. Spending three months and a chunk of savings on a certificate that no target role actually asks for is one of the most common and most avoidable mistakes in an IT transition — which is exactly why the order you choose them in matters. The practical framework Use certifications as targeted evidence, not as a scoreboard. Three rules: Match objectives to a job. Open the certification's published objectives next to a real job description. Overlap means it is relevant; no overlap means it is a hobby. Prove the same skills in practice. For each major objective, build one small artefact that shows you can do it, not just recall it. Stop at enough. One well-chosen, well-demonstrated certification beats three unrelated ones. Sequence them to roles, not to availability. Which one first? Let the target role decide, not the brand with the loudest marketing. As a rough guide: a vendor-neutral foundation (such as CompTIA A+ for general IT support, or Network+/Security+ as you specialise) suits broad support roles; a cloud-fundamentals exam (Microsoft Azure or AWS) suits cloud-leaning roles; Cisco-flavoured paths suit networkin
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FTC lawsuit reveals how subscription scam networks evade app store enforcement
A new FTC lawsuit reveals how sophisticated subscription app operators can allegedly use shell companies and payment infrastructure to stay active on app stores despite mounting consumer complaints.
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Opentofu vs pulumi, which one survives a 200-account landing zone
IaC tools built for single-team deployments fail structurally at 200 accounts because the failure modes are architectural, not configurational. Why 200 Accounts Is Where IaC Tools Break IaC tools built for single-team deployments fail structurally at 200 accounts because the failure modes are architectural, not configurational. Scale Threshold State Management Provider Auth Overhead Execution Time Impact ~10 accounts One backend bucket, one workspace; quirks are routable Not a meaningful bottleneck Sequential plan/apply is manageable ~50 accounts Sequential execution still viable; blast radius contained Per-account latency exists but tolerable Below threshold where parallelism is required 200+ accounts 200 separate plan operations per shared-module refactor 3-sec per-account auth × 200 = 10 min added per plan cycle Sequential Terraform applies measured at 4.1 hours end-to-end A 10-account environment forgives sloppy state management. One backend bucket, one workspace convention, one pipeline. Engineers learn the tool's quirks and route around them. At 200 accounts, those same quirks compound. Why the threshold is 200 State lock contention, cross-account provider authentication chains, and module resolution latency stack on top of each other. The result is not slower deploys. It is non-deterministic deploys, which is operationally worse. The specific threshold matters. Below roughly 50 accounts, most teams run plan and apply sequentially without parallelism because the blast radius of a runaway apply is contained. Above 200 accounts, sequential execution becomes untenable. We measured a 200-account org where sequential Terraform applies across all accounts took 4.1 hours end-to-end. That latency made emergency remediation impossible inside a standard incident window. Three compounding failure modes State file proliferation. Each account carries its own state file, and each state file is a consistency boundary. At 200 accounts, a single refactor touching a shared modu
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AI Use by the US Government
On 14 April, the Trump administration quietly acknowledged the widespread use of AI to automate government processes. The office of management and budget (OMB) disclosed a staggering 3,611 active or planned use cases for AI across the federal government. The list has ballooned by 70% from the one published in the final year of the Biden administration, and includes many disturbing-seeming plans to hand over sensitive governmental functions to AI. Scanning this list, many readers may find many causes for alarm. It represents a transfer of decision processes from human to machine on a massive scale over matters of individual freedom, public health and well-being, nuclear reactor safety and more...
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AI Agent Memory: Conversation vs Context
An AI agent has two kinds of memory: conversation (semantic) and context (exact reference). Keep them separate with Strands and AgentCore.
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DOJ claims xAI’s unpermitted gas turbines are a matter of ‘national, economic, and energy security’
The Justice department says the Pentagon needs xAI to keep using its unpermitted gas turbines.
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Coinbase Postmortem Reveals How a Localized AWS Failure Triggered a Multi-Hour Trading Outage
Coinbase has published a detailed postmortem of its May 7, 2026, outage, revealing how a localized cooling failure inside an AWS data center escalated into a multi-hour disruption that halted nearly all trading activity across the cryptocurrency exchange By Craig Risi
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How My First Claude Code on AWS Bedrock Experiment Cost Me $8.43 in Just One Day
My AWS Bedrock Experiment Cost Me $8.43 in Just One Day What I learned about AWS Bedrock pricing the hard way, and why budget alerts saved me Why I Even Tried Claude Code on Bedrock I have been using Claude Code for a while now, connected to Anthropic directly. It works well. But two things were bothering me. First, the usage limits. Claude Code on Anthropic's native setup has 5hours session limit and a weekly usage cap. Once you hit it, you have to wait. If you are in the middle of something or just want to experiment freely, that gets frustrating fast. Second, billing. I already manage everything on AWS. I'm very familiar with it, the invoices go to one place, and I understand how to track and control costs there. Adding a separate Anthropic subscription meant one more billing account, one more credit card charge, one more thing to track. I just wanted everything under one roof. So I thought, why not try Claude Code connected to Amazon Bedrock? Same tool, runs on AWS, billed through AWS. Seemed like a clean solution to both problems. What happened next is why I am writing this post. The Two Ways to Run Claude Code Most people do not realise Claude Code can be configured to run in two different ways. Option 1: Claude Code via Anthropic directly You connect Claude Code to Anthropic's API or use it under your Claude subscription. Billing goes through Anthropic. If you are on a subscription plan, you pay a flat monthly fee and the usage limits apply to how much you can do within that. Option 2: Claude Code via Amazon Bedrock You connect Claude Code to AWS Bedrock as the backend. Same Claude models, but now AWS is your provider. Billing goes through your AWS account. No Anthropic subscription needed. From the outside, it looks and feels the same. But the billing model underneath is completely different, and that is where things get interesting. What Happened When I Tried It I set up Claude Code to use Bedrock and gave it a prompt. A fairly detailed one, nothing unusual
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I built a Terraform security scanner that lives inside GitHub PRs
The problem IAM wildcards and public S3 buckets keep slipping through Terraform code review. Tools like Checkov and tfsec exist but they live in CI, require config files, and developers ignore the output because it's not where they're working. What I built TerraWatch is a GitHub App that scans every pull request that touches .tf files automatically. If it finds a security issue it blocks the merge and posts the exact code fix as a PR comment. The developer sees something like this in their PR: ⚠️ PUBLIC_S3_BUCKET - main.tf (Line 6) Severity: HIGH Risk: S3 bucket allows public read access. Fix: acl = "public-read" acl = "private" block_public_acls = true restrict_public_buckets = true They copy the fix, push, and the merge unblocks automatically. How it's different No YAML, no CI config - installs in 2 minutes via GitHub App Fixes are hardcoded diffs, not AI generated Nothing auto-applied - you review every fix No Checkov dependency - own lightweight rules engine Only reads changed .tf files in the PR, never your full codebase 29 rules covering S3 public access, IAM wildcards, open ports (SSH/RDP/MySQL/Postgres), unencrypted EBS/RDS, public databases, hardcoded secrets, EKS public endpoints, CloudTrail disabled, IMDSv1, and more. Try it Free during beta - terrawatch.dev Also launching on Product Hunt today if you want to show some support!
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Building a Low-Latency Polymarket Bot for Earnings Markets: A Real-World Attempt (Lessons & Technical Breakdown)
A bot on Polymarket quietly extracted $32k in near risk-free profits by sniping “Will Company XYZ Beat Earnings?” markets. It waits for the official release, then instantly buys the winning side. Many limit orders from retail traders remain uncancelled, creating a post-announcement arbitrage window. Two developers decided to challenge it. Here’s what they learned while trying to build a faster version. Infrastructure Choices Location : Polymarket’s CLOB runs in AWS eu-west-2 (London). They deployed from Ireland (eu-west-1, Dublin) — the closest realistic option without IP tricks. UK IPs are blocked. Language : Rust for type safety and speed. The author notes you can achieve competitive latency in Python if you strip unnecessary network calls. Key Warning : Avoid the official Polymarket SDKs for ultra-low latency. They include helpful but slow pre-trade checks. Build lean custom clients. The Data Feed Challenge (The Real Bottleneck) The critical edge is getting earnings announcements faster than competitors. Source Performance Verdict Scraping Newswires Too slow Failed Benzinga Low-Latency Slower than manual clicking Failed Paid ultrafast feed ~500ms after release Still too slow EDGAR Consistently slower than newswires Backup only Even at 500ms, the order book was already swept by faster bots. The top players are likely using extremely expensive dedicated feeds or custom setups. Technical Lessons Learned Network > Code Most latency lives in the network round-trip, not in language choice. Optimize transport first. Custom Execution Layer Skip heavy SDK abstractions. Direct signed orders with minimal validation. Post-Event Sniping Logic Monitor newswire feeds aggressively Parse EPS vs. estimate instantly Place aggressive limit/market orders on the winning side Handle cases with ambiguity (multiple interpretations of “beat”) Reality Check They made some wins during EPS ambiguity or when faster bots hit size limits, but never won on pure speed against the leader. Why This
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Presentation: Practical Performance Tuning for Serverless Java on AWS
AWS Hero Vadym Kazulkin explains how to overcome Java’s enterprise hurdle on AWS Lambda: cold starts and memory footprints. He shares a technical deep dive into performance tuning, comparing fully managed AWS SnapStart (with pre-snapshot priming hooks) against GraalVM ahead-of-time compilation, while addressing the latest architectural implications of Project Leyden and Java 25. By Vadym Kazulkin
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The most popular AI coding skills right now
Introduction It's crazy to me that some GitHub repos, that were just created in the last...
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Anthropic Releases and Temporarily Suspends Claude Fable 5
On June 9, 2026, Anthropic launched Claude Fable 5, a model designed for long-horizon tasks, but it was taken offline shortly after due to a U.S. government export directive. It shares architecture with Claude Mythos 5, supporting extensive token usage. The model includes mandatory data retention requirements, which have affected its deployment with partners like Microsoft. By Andrew Hoblitzell
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Pooling contra una t3.micro, el día que se reventó...RDS Proxy es la salida?
Cómo un backend de FastAPI + asyncpg comparte un solo Postgres chiquito con sus propios trabajadores en segundo plano y un segundo servicio, por qué el techo de conexiones, no el CPU, es lo que de verdad le pone tope a nuestro autoescalado, la caída en el cambio de hora que nos enseñó la cuenta, y una mirada honesta a RDS Proxy como la válvula de escape (incluyendo la trampa de asyncpg que lo puede dejar sin hacer nada). TL;DR Ajuste Valor Por qué Driver postgresql+asyncpg asíncrono hasta el fondo pool_size / max_overflow 8 / 12 (20 por proceso) subido desde 3/5 después de una caída pool_pre_ping True mata los sockets muertos tras un reinicio de RDS / inactividad pool_recycle 1800 s techo duro que el pre-ping no puede cubrir Tope de conexiones de RDS ~87 (t3.micro, menos las reservadas) la verdadera restricción de todo Pruebas NullPool sin pooling entre event loops en pytest La lección que replanteó todo el problema: en un RDS chico, tu cuenta máxima de tareas la fija max_connections , no el CPU ni la memoria. Un autoescalado que ignora el presupuesto de conexiones va a escalar directito hacia QueuePool limit reached , o peor, FATAL: too many connections del mismo Postgres. El pool, y la cuenta escondida adentro de él engine = create_async_engine ( settings . DATABASE_URL , connect_args = { " ssl " : " prefer " }, # negocia TLS en RDS, texto plano en local pool_pre_ping = True , pool_size = 8 , max_overflow = 12 , # 8 + 12 = 20 conexiones por proceso pool_recycle = 1800 , ) Veinte conexiones por proceso se ven modestas hasta que las multiplicas por cada capa entre ellas y la base de datos: pool_size + max_overflow = 20 por proceso de Python × 2 trabajadores de uvicorn = 40 por tarea de Fargate × 2 durante un despliegue rolling = 80 (tarea vieja drenando + tarea nueva arrancando) + servicio de inteligencia (3 + 7) = 10 sobre la misma base de datos + alembic / ad-hoc / psql ≈ unas pocas ---------------------------------------- ≈ 87 ← el techo de la t3.micro, con ~0 de
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I built a region-survivable system by directing an AI agent. An append-only decision log kept it coherent.
Most of the code in Quorum was written by directing Claude Code, an AI coding agent. That is not the interesting claim, and on its own it is not even a good one. An agent left to run unsupervised produces fast, plausible, locally-correct code that drifts into an incoherent system. The interesting part is the discipline that turned agent speed into a coherent, correct, multi-region database application. That discipline was an append-only architecture decision log. The failure mode of agent-built software An agent has no memory across sessions. It will happily contradict a decision it "made" yesterday, re-open a question that was settled last week, or quietly drift from the design because the local change in front of it looks fine. Each individual output is reasonable. The aggregate, without governance, is a system where the data model fights the access layer and the third change undoes the first. This is the part people underestimate when they talk about AI coding velocity. Speed without a source of truth does not get you to a good system faster. It gets you to entropy faster. A fast writer with no memory and no sense of consequence is a liability at scale unless something outside the agent supplies the continuity. The decision log Quorum carries a file of numbered architecture decisions, DEC-001 onward, now past two dozen. Each entry has the same shape: the context that forced the decision, the decision itself, references to the prior decisions it refines or interacts with, and a status. Three rules make it work: Append-only. Entries are never edited. A later decision can supersede an earlier one, but it does so as a new numbered entry that references the old one. The history of why the system is shaped the way it is stays intact and readable, including the choices that were later reversed and why. Committed separately from code. The decision and the code that implements it are different commits. The log reads as a clean narrative of intent, independent of the diffs
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Surviving the region you run in: failover on Aurora DSQL, and what the demo proves
The thesis Quorum is built on is uncomfortable and true: the tools a team uses to coordinate an incident often live in the same region as the thing that is failing. When the region goes, the incident response goes with it. You are now coordinating a region outage over a status page that the region outage took down. Quorum is an incident command plane designed to survive a region loss. This post is about how the failover works, what the live demo does and does not prove, and where the survival story currently ends, because a database audience will ask all three and they deserve a straight answer. What DSQL gives you A multi-region DSQL cluster in the US set is three regions: two full regions, which for Quorum are us-east-1 and us-east-2, and a log-only witness in us-west-2 that has no cluster endpoint of its own. Both full-region endpoints present a single logical database with strong consistency, and the architecture is designed for 99.999% multi-region availability with no single point of failure and automated failure recovery . The behavior that matters for an incident tool is stated plainly in the GA announcement : applications can keep reading and writing with strong consistency even when they are unable to connect to a region's cluster endpoint, and the third region acts as a log-only witness with no cluster resource or endpoint. The survivor keeps serving; the witness holds the log so the surviving region keeps commit quorum. Quorum is, in effect, a live demonstration of that reference behavior with an incident-command product wrapped around it. Quorum's failover layer AWS's guidance for multi-region DSQL is to put routing in front of the endpoints: either DNS-based routing with Route 53, or application-level routing logic, so traffic redirects automatically when an endpoint becomes unreachable. This is laid out in Implement multi-Region endpoint routing for Amazon Aurora DSQL . Quorum, a Next.js app on Vercel, does the application-level version: it detects an