How to build a project-specific AI assistant on Telegram, backed by Claude Code CLI running in a self-hosted container. Per-mandate instance pattern, seven architecture decisions to make before writing code, full compose and Dockerfile, and a replicable bootstrap walkthrough.
Your project-specific AI agent eventually needs an email address — for password resets, vendor correspondence, or because the bot becomes the operational front door. This guide covers the dedicated subdomain mailbox pattern with DKIM, SPF, and DMARC, using one DNS provider and a separate mail provider, with end-to-end API calls and a self-loopback verification path.
A hermes-style AI assistant that works in DM hits specific failure modes in a multi-user group chat: empty-reply crashes, miscalibrated progress notifications, race conditions, stderr deadlocks. This guide documents eight tuning patterns with the code to implement each, applied to a minimal hermes-style assistant built on the Claude Code CLI.
Scaling a Telegram AI assistant from solo use to a team workspace requires more than just adding user IDs to an allow-list. This guide covers the full mechanics — allow-list formats that survive Docker restart pitfalls, group setup with correctly-configured triggers, and the privacy trade-off most teams overlook before going multi-user.
Self-hosted Astro sites that migrated from WordPress often have redirect chain issues, competing sitemaps, and stale Google Search Console configurations. This guide covers how to diagnose and fix each problem using curl, Plausible analytics, and GSC data.
Returns account for up to 15% of Amazon FBA sales and the cost concentrates in a small fraction of the catalog. We built a return analysis pipeline that surfaces the dominant return reason per SKU, calculates probability-weighted margins, and feeds the result into advertising threshold calculations.
We have used both n8n and Zapier in production. Not for evaluation purposes — we use them for real automation workloads across different parts of the business. This puts us in a position to give a specific account of where each tool performs well and where each one creates problems, based on the kinds of workflows that actually matter for a small technical operation rather than the comparison frameworks that most reviews use.
The decision framework for self-hosting versus managed services. The subscription fee comparison is the least useful part of the analysis; the factors that determine total cost over a realistic horizon are operational time, security burden, team stability, and instance count.
GitHub Actions is well-documented for deployments to cloud PaaS platforms — Vercel, Railway, Fly.io, and similar managed environments all have first-party integrations. But in reality, a significant share of production infrastructure runs on self-hosted VPS instances or bare-metal servers where the deployment model is fundamentally different. This post covers the patterns we use for deploying Docker Compose applications to a self-hosted Hetzner server via GitHub Actions, including secrets management and rollback.
We built a script to automatically download our Wise bank statements. That is a one-afternoon task. The more interesting question — one that took considerably longer to answer — was whether the same tool could serve other businesses with the same problem, and what it would take to make that transition responsibly. The journey from a CLI script running on a developer laptop to a containerised service with email notifications exposed a set of decisions that are worth documenting.
B2B buyers do not browse product catalogs the way consumers do. They arrive with a specification, a compliance requirement, or a procurement checklist. A product page that leads with lifestyle photography and marketing copy will not serve them. But in reality, most e-commerce platforms are built around consumer patterns, and adapting them to serve B2B purchasing behaviour — particularly around product certifications — requires deliberate structural decisions.
There is a point in the growth of any small operation where the number of active projects exceeds what can be held in working memory. Orders need monitoring across multiple marketplaces. Infrastructure needs maintenance. New features are in development. Clients have questions. Everything is real work, and there are not enough hours to treat each project with the same level of active attention.
The question of when a warehouse management system is worth integrating comes up earlier than most small e-commerce operations expect. Spreadsheets work well until they don't — and the inflection point is usually not order volume but order complexity: multiple SKUs with variant tracking, bundles, backorders across multiple fulfilment locations, or the need for accurate available-to-promise figures at checkout.
Most business growth frameworks are built around the assumption that demand must be created. You build a product, then you communicate its existence to people who do not yet know they want it. But in reality, a large portion of commerce operates on a different principle: demand already exists, and the business problem is positioning yourself to capture it rather than creating it from scratch.
Stripe's documentation is genuinely excellent, and the initial integration usually works on the first attempt. But in reality, international e-commerce surfaces a class of problems the quickstart guide doesn't cover: webhook delivery reliability across infrastructure restarts, the subtle mechanics of refunds in non-settlement currencies, and the operational overhead of managing API keys across multiple environments.
The specific SEO fixes that improved rankings — canonical URL inconsistencies, sitemap filtering, trailing slash normalization, and GSC indexing issues. Real before/after data, abstracted.
Amazon's SP-API provides access to a substantial volume of operational data — orders, inventory, settlements, advertising, catalog performance. But in reality, the data is only useful in the form you can query. Amazon's own reports are transient, rate-limited, and not designed for the operational questions that matter most to a seller managing a multi-marketplace business.
On December 3rd, 2025, the React team disclosed CVE-2025-55182 – a pre-authentication remote code execution vulnerability in React Server Components with a CVSS score of 10.0. Within hours, threat intelligence teams at Amazon, Google, and Microsoft observed active ex...
Why we closed our Shopify store and evaluated Medusa v2, Saleor, and Commerce.js as alternatives. What Shopify got right, what pushed us away, the evaluation criteria, and the migration path we chose.
Internationalizing an e-commerce site to dozens of languages — translation pipeline decisions, URL structure trade-offs, hreflang implementation, RTL considerations, and the cultural adaptation work that no translation tool handles.
Amazon's flatfile system is the most complete interface for bulk listing management, and one of the least well-documented for multi-marketplace operations. Each marketplace uses a different template version, enforces different field requirements, and applies different validation rules — often for the same product in the same category.
Running data extraction across Amazon US, JP, and DE — different report formats, currencies, and date conventions. Config-driven architecture, per-marketplace YAML status, and a registry-based report definition approach.
Writing a comprehensive test suite for a FastAPI backend in one focused pull request. Fixture patterns that provide transaction rollback isolation, mocking external HTTP calls with respx, and testing authentication flows via dependency injection overrides – along with an honest assessment of the return on investing in tests late rather than never.
Reddit’s tracking for e-commerce faces the same challenges as other advertising platforms: browser-based pixels are increasingly blocked by ad blockers, privacy settings, and iOS tracking restrictions. According to Reddit’s official documentation, the Conversions API provides “m...
Building a CLI tool to extract dozens of report types from Amazon Seller Central — the browser automation trade-offs, deterministic file naming, YAML state tracking, and the two-pass workflow for overnight reports.
The instinct when an Amazon business is performing well in one marketplace is to expand. The instinct is correct. But in reality, most marketplace expansion decisions are made on impressions rather than structured evaluation — and the differences between markets are large enough that an unscored launch can consume months of effort for negative returns.
After hundreds of real sessions across Claude Code, Cursor, Gemini CLI, OpenCode, and Qwen Code, here is what each actually excels at — and where each quietly fails.
The push toward data-driven e-commerce is real, and largely misunderstood. Sellers accumulate tools that promise insights, dashboards that display metrics, and reports that summarize performance. But in reality, what matters isn’t visualization – it’s access to the underlying da...
Amazon sellers face a consistent challenge that most third-party tools fail to address properly. The data that matters – orders, inventory levels, financial settlements, returns, catalog performance – exists in Amazon’s systems, but accessing it programmatically at scale requires navigating...
A production incident where Google and Apple Sign-In failed on mobile because the Supabase auth container’s PostgreSQL search_path did not include the extensions schema. The debugging journey from “auth broken on mobile” to the fix, and what it reveals about cross-platform OAuth differences.
Shadow DOM provides genuine encapsulation for web components, and that same encapsulation makes it deeply problematic for automated testing. Most automation frameworks were built around document.querySelector — and Shadow DOM is specifically designed to be invisible to it.
Anthropic launched Skills for Claude this week, and the feature addresses something real – a gap that’s been frustrating organizations trying to deploy AI at scale. The promise is simple: package your expertise into reusable modules that Claude can load on demand. But in reality, Skil...
The 183-day rule sounds simple in theory – spend fewer than 183 days in a country, and you may avoid tax residency. But in reality, tracking this across multiple jurisdictions with manual calendars and spreadsheets is largely unsuited to the way modern professionals actually live and work. ...
Running more than a hundred Docker containers in production is not unusual if you have built up services gradually over several years. What becomes difficult is not deploying these containers — it is maintaining them month after month without gradual accumulation of disk pressure, silent failures, and expired certificates.
Last Updated: October 15, 2025 Self-hosting n8n delivers unlimited workflow executions, complete data control, and significant cost savings compared to cloud plans. But in reality, self-hosted instances face unique challenges that cloud users never encounter – specifically around large...
The general-purpose AI coding agent handles a surprisingly wide range of tasks. But most teams hit the same friction point in real operational environments: providing domain context is itself a task that grows with the complexity of the domain...
Building a React application locally is straightforward. Deploying it to production servers correctly? That’s where most developers hit unexpected roadblocks. This guide documents a real deployment debugging session where everything appeared configured correctly—container running, Traefik l...
Apple’s recent notification to developers signals a significant milestone for the European digital economy. Beginning January 1, 2026, Bulgaria will officially adopt the euro, replacing the Bulgarian lev after nearly two decades of EU membership. For anyone building or distributing applicat...
The maritime logistics landscape is about to shift significantly. Beginning October 14, 2025, the US Trade Representative will implement a new port fee structure targeting Chinese-owned, Chinese-operated, and Chinese-built vessels entering US ports. The phased approach, plateauing in 2028, repres...
The tutorial ecosystem for Playwright and Puppeteer is extensive. What it largely skips is what happens when you point that automation at a production website that actively doesn't want you there – and what it takes to run it reliably across weeks and months rather than an afternoon proof of concept.
Family relationship queries — 'are these two people related?', 'what is the degree of separation?', 'who is the common ancestor?' — are surprisingly hard to answer efficiently with standard adjacency list storage. Closure tables solve this by trading write overhead for dramatically faster reads. This post covers the table structure, the SQL for LCA queries and degree-of-separation calculations, and the performance difference that makes closure tables the right choice for read-heavy relationship graphs.
When you self-host Supabase, a CRM, a DAM, and a Git server on a single machine, the question of what happens when that machine dies is not theoretical. The backup strategy we run covers pg_dump orchestration for multiple PostgreSQL instances, staggered scheduling to avoid I/O contention, encrypted uploads to object storage, and regular restore testing. Here is how it is structured and what we learned from the first time we actually needed it.
Users get randomly logged out, error monitoring shows sporadic 401s on routes that should be authenticated, and the pattern is infuriatingly inconsistent. The cause is almost always the same: multiple concurrent API calls simultaneously detecting an expired token and independently attempting to refresh it. This post covers the singleton promise pattern, the interceptor queue approach, and how this specific failure mode manifests in Supabase-backed applications.
A family tree is a graph. The data is a set of nodes connected by typed edges — parent, spouse, sibling — and the visualisation problem is how to lay that graph out intelligibly at different scales. ReactFlow provides the rendering infrastructure; the interesting decisions are in the custom node types, the Dagre layout algorithm, the edge styling for relationship types, and the performance strategies needed when trees grow beyond a few hundred nodes.
We’ll be participating in MEDICAL FAIR THAILAND 2025, Southeast Asia’s premier medical and healthcare exhibition. As Thailand continues to establish itself as the largest medical technology market in the region, this event represents a crucial opportunity for companies looking to...
We’re excited to announce tva’s participation in CMEF (China International Medical Equipment Fair) taking place September 26-29, 2025, in Guangzhou. As one of the world’s leading medical equipment exhibitions, CMEF offers an unparalleled platform for healthcare innovation and in...
E-commerce performance directly impacts revenue – studies show that a one-second delay can reduce conversions by 7%. When dealing with WordPress multisite networks running WooCommerce across multiple regions, performance challenges become exponentially more complex. We’ll show you how we ac...
Most product dashboards are built the same way: one top-level component fires off ten API calls, waits for all of them, then renders everything at once. TanStack Query changes this by giving each widget its own independent data lifecycle — separate loading states, error boundaries, and refresh intervals — so the architecture holds up in production.
A security audit on a production Next.js application backed by Supabase is not a single pass through the code — it is a structured sequence of phases, each with its own scope and tooling. RLS policies, CSP headers, rate limiting, Zod validation, and timing attack protection each require a different lens. Here is how we structured the audit, what we found in each phase, and what we changed.
How to create a template-based, multi-tenant development environment with 16 containerized services that works offline yet remains accessible online through subdomain-based routing Managing development environments for multiple clients often means choosing between complex manual setups or expensi...
As we approach the final countdown to eCommerce Expo | DMEXCO Asia 2025, taking place on 8-9 October 2025 at Marina Bay Sands, Singapore, we wanted to send you this important reminder about this event and our participation. A Quick Reminder About This Event As we previously announc...
Amazon Seller Central generates data at a pace that outstrips most analysts’ tooling. Traffic reports, conversion data, inventory health summaries, business performance exports, advertising campaign breakdowns – each delivered as a CSV or TSV file, accumulating over months and years into directories containing thousands of files. The standard response is to import everything into a database. But in reality, standing up and maintaining a PostgreSQL instance for a read-heavy, schema-variable analytics workload introduces more overhead than the problem warrants.
How to combine local language models with web search capabilities while keeping your data private Setting up AI tools for business use often means choosing between convenience and privacy. Cloud-based solutions are easy to use but send your data elsewhere. Local solutions keep everything on your ...
The bug was subtle: an iOS widget displayed the correct country name in English but showed the wrong flag emoji in German. The root cause was a country lookup that used localised country names as dictionary keys — names that change depending on the device locale. Fixing it required rebuilding the lookup around ISO 3166-1 alpha-2 codes, and the lesson extends well beyond flags.
The SaaS CRM market is not short of options. Salesforce, HubSpot, Pipedrive, Zoho — each with its own pricing tier, feature matrix, and account manager ready to explain why the next tier up is exactly what your business needs. We used several of these tools over the years and found that, beyond a certain point, the value proposition inverts.
The distance from a SwiftUI prototype to a published App Store listing is shorter than most people assume, but it requires making decisions that feel premature when the code is still young. What to cut, when to cut it, how to handle the provisioning and review process, and what “done” actually means for a first release — these are the variables that determine whether weeks becomes months.
Following our initial announcement regarding tva’s participation in the co-located exhibitions SIGN CHINA 2025, LED CHINA 2025 · Shanghai, and Digital Signage China 2025, we are pleased to provide additional insights based on recent industry developments and enhanced exhibition pr...
We are pleased to announce that tva will be participating in IAAPA Expo Asia 2025, the premier trade show and conference for the attractions and leisure industry in the Asia-Pacific region. As a company dedicated to comprehensive infrastructure management and strategic advisory services, we look ...
Self-hosting multiple websites on a single server becomes exponentially more challenging when performance bottlenecks emerge. CloudPanel simplifies website management, but achieving optimal performance requires systematic server optimization that goes far beyond default configurations. If youR...
Managing multiple websites becomes exponentially more challenging when database bloat and corrupted access credentials create cascading performance failures. CloudPanel simplifies website management, but eliminating critical database bottlenecks requires systematic cleanup strategies that go far ...
When Europe’s most ambitious railway infrastructure project requires specialized safety solutions, precision logistics and innovative hygiene products become critical success factors. Our collaboration with Turmforum, representing the Stuttgart-Ulm Railway Project (Bahnprojekt Stuttgart-Ulm...
The digitization of B2B procurement processes has accelerated dramatically across global markets. Large enterprises increasingly depend on eProcurement systems like SAP Ariba, Coupa, and Oracle to standardize and automate their purchasing workflows. For suppliers, this evolution presents both opp...
The analytics tracking landscape has shifted considerably since GDPR took effect in 2018. In reality, most organisations still run Google Analytics 4 on their websites — not because it is the best tool for the job, but because migration appears costly and the alternatives seem niche. We moved to self-hosted Plausible CE and the results are worth documenting in detail...
We’re excited to announce that tva will be participating in the inaugural eCommerce Expo | DMEXCO Asia 2025, taking place on 8-9 October 2025 at Marina Bay Sands, Singapore. This groundbreaking event marks DMEXCO’s first international expansion, bringing together Asia&#...
Over 22 years of e-commerce evolution have taught us that sustainable growth requires more than technology – it demands orchestrated integration of digital infrastructure, international trade expertise, and operational excellence. At tva, we’ve refined methodologies that transform complex m...
Self-hosting multiple applications becomes exponentially more powerful when you can run them under different domains with automatic HTTPS. Traefik is the modern reverse proxy that makes this possible, eliminating the complexity of manual SSL certificate management while providing production-grade...
International expansion into Japan’s market offers significant opportunities, but the regulatory requirements introduced in October 2023 have created complex barriers that can derail unprepared sellers. We’ll guide you through implementing Attorney for Customs Procedures (ACP) service...
Swift 6 turns concurrency warnings into errors, and the compiler is unforgiving about actor isolation boundaries. In practice, most of the migration work concentrates in a small number of patterns: ObservableObject classes that mutate published properties from background tasks, delegate callbacks that aren't on the main actor, and Task closures that capture non-Sendable types. Here is what the errors actually mean and how to fix them.
Workflow automation platforms are essential for modern development teams, but cloud solutions like Windmill Cloud can become expensive as usage grows. We’ll show you how to set up your own Windmill instance on Ubuntu with Docker Compose and Traefik integration, overcoming critical PostgreSQ...
Self-hosting n8n gives you unlimited workflow executions and complete control, but complex workflows with large datasets can trigger frustrating errors that don’t exist in cloud-hosted solutions. If you’re seeing “Please execute the whole workflow, rather than just the node. (Ex...
Upgrading Docker Engine from 28 to 29 and Docker Compose from v2 to v5 on a server running over a hundred containers is not a routine package update. We document the preparation checklist, rollback plan, and the actual step-by-step process we used — with the real commands.
Self-hosting n8n gives you incredible power and cost savings, but webhook integrations can sometimes fail in ways that don’t occur with cloud-hosted solutions. If you’re seeing “Execution cancelled” errors or webhooks that simply don’t trigger, you’re not alone...
We are pleased to announce that tva will be participating in the co-located exhibitions SIGN CHINA 2025, LED CHINA 2025 · Shanghai, and Digital Signage China 2025. As a company dedicated to comprehensive infrastructure management and strategic advisory services, we look forward to exploring poten...
Workflow automation has become essential for modern businesses, but SaaS solutions can become expensive as teams grow. We’ll show you how to set up your own n8n instance on Hetzner Cloud for under €5/month, giving you unlimited workflows and complete control over your automation platform. W...
Corporate websites built on React single-page applications were a reasonable choice in 2018. Many of those same sites now underperform on Core Web Vitals, search rankings, and time-to-first-meaningful-content. Migrating to Astro is not a wholesale framework replacement — it is a reconsideration of where JavaScript belongs in a site that is primarily content.
Architecting an exam prep app across multiple regions and certification tracks means solving problems that don't appear until scale does: how to keep thousands of questions organized without a monolithic data model, how to structure a Swift codebase that can serve multiple exam types without diverging, and how to give users a useful offline experience while keeping leaderboards accurate. The decisions we made — and the ones we avoided — are worth documenting.
We recently participated in the 137th Canton Fair Phase 3 in Guangzhou and wanted to share our experience with you. Fair Overview The Canton Fair concluded on May 5th with strong attendance figures – 288,938 overseas buyers from 219 countries and regions visited in person, a 17.3% increase from t...
We are pleased to announce that tva will be participating in Phase 3 of the 137th Canton Fair 2025. As a company dedicated to comprehensive infrastructure management and strategic advisory services, we look forward to exploring potential collaborations with suppliers and partners at this prestigi...
Running four reverse proxy layers in front of a single application looks like redundancy. But when Cloudflare, Traefik, Varnish, and Nginx each solve a distinct problem, the apparent complexity resolves into a clear separation of concerns — routing, caching, application serving, and compute — with measurable performance benefits.
App Store Connect rejects icons with messages that tell you almost nothing useful. In most cases, the culprit is one of three things: a Display P3 color profile where sRGB is required, an alpha channel the validator refuses to accept, or an indexed color mode that quietly breaks PNG compliance. Here is how to diagnose each and fix it from the command line.
Running multiple production database instances on shared infrastructure demands careful resource isolation. Here is how we approach it with Docker, and what we learned the hard way.
Mainstream e-commerce advice points toward broad markets with high search volume. But in reality, niche sports verticals — bowling, pétanque, curling, disc golf — consistently outperform on the metrics that actually determine profitability: conversion rate, return rate, customer lifetime value, and cost per acquisition. The characteristics that make these markets look unattractive on paper are exactly what make them defensible in practice.
Keyword filtering is fast, cheap, and wrong in exactly the ways that matter. When a recruiter defines a nuanced ideal candidate profile, no bag-of-words approach can evaluate whether a job listing fits it faithfully. We built a matching pipeline that scores listings against a fixed profile using an LLM, running matches in parallel with ThreadPoolExecutor, tracking token costs in real time, and exposing pause/resume controls from a native SwiftUI macOS application.
We’re pleased to announce that tva Duplicate Pro is now publicly available on GitHub. This release provides developers and WordPress professionals with direct access to our plugin’s source code while maintaining the same quality standards you expect from our products. For a comprehens...
Our company name has changed to “tva.” This strategic update enhances brand recognition while maintaining our commitment to technical excellence and precision in all services. What This Means The transition to tva represents a refinement of our identity that better reflects our core c...
A Modern Approach to Asset Management In today’s interconnected business landscape, the traditional boundaries between digital infrastructure and physical asset management are rapidly dissolving. As a Singapore-based technology and asset management firm, we’ve observed firsthand how t...
Streamlining Content Management in WordPress In the realm of digital content management, efficiency and precision are paramount. Today, we’re pleased to announce the release of tva Duplicate Pro, a sophisticated WordPress plugin designed to streamline your content duplication workflow. This...