Posts

Crypto assets sitting on an exchange? You don’t actually own them—“Not your keys, not your coins.” Exchange collapses, hacks, account bans: your assets can vanish overnight. Once your holdings reach a certain scale, a hardware wallet becomes essential infrastructure. SafePal is a hardware wallet brand backed by Binance Labs, supporting 100+ blockchains with strong value for the price. This guide walks you through it from scratch. ...

Running quant strategies and proxy nodes without monitoring is extremely risky. Out-of-memory crashes at 3 AM, disks filling up, strategies crashing—without alerts, you might not notice for hours. This guide builds a complete monitoring stack from scratch: Node Exporter collects metrics on each monitored machine, Prometheus aggregates and stores them, Grafana visualizes the data, and Telegram delivers alerts. Architecture Monitored VPS (N machines) Central Monitoring VPS (1 machine) ┌──────────────┐ ┌─────────────────────┐ │ Node Exporter│ ──9100──→ │ Prometheus │ │ Node Exporter│ ──9100──→ │ (collect & store) │ │ Node Exporter│ ──9100──→ │ Grafana │ └──────────────┘ │ (visualize) │ │ Alertmanager │ │ (alerts) │ └─────────────────────┘ The approach: dedicate a small VPS (1 core, 1 GB RAM is plenty) as the monitoring hub; install Node Exporter on all other machines to expose metrics. ...

I’m currently paying $80/month to subscribe to two GitHub Copilot Pro+ accounts. That number seems steep at first, but after three months of use, I believe it’s the best ROI among all my AI subscriptions. This article breaks down the math so you can judge for yourself whether it’s worth it. What is Copilot Pro+? GitHub Copilot has three tiers: Tier Monthly cost Key difference Copilot Free Free Basic completions, 2000 completions/month Copilot Pro $10 Unlimited completions, GPT-4o model Copilot Pro+ $19 Unlimited completions + advanced model quota The key differences in Pro+: ...

Many people think having a VPS proxy node is enough—it’s not. VPS IPs come from data centers, and many platforms impose extra restrictions on data center IPs. OpenAI won’t let you register with a data center IP, some platforms trigger additional verification, and accounts get restricted for “suspicious login”… These scenarios require residential IPs. IPRoyal is a residential IP service I’ve been using long-term. This article clarifies when you need residential IPs and how to use them. ...

Stop-loss is the most overlooked—and error-prone—component in quant strategies. Many novice strategies look great in backtests but blow up the moment you run them live. Often, the culprit is poor stop-loss design: either it’s too wide and lets single trades lose too much, or it’s too tight and gets whipsawed by market noise. This article draws from the actual design of the Polaris strategy and covers general stop-loss design principles. ...

💡 Mainland China Notice: Binance’s official site is not directly accessible from mainland China — you’ll need to provide your own network tools to access it. Fiat deposits don’t support bank cards; deposits happen mainly through C2C channels (USDT ↔ CNY). Profitability in algorithmic trading is heavily determined by trading fees. A strategy executing 100 trades per month at 0.1% fees incurs 20% in costs on both sides. Reducing fees from 0.1% to 0.05% yields significant annual savings. ...

DMIT is my primary VPS provider, and I’ve been using it for over a year. Its Hong Kong and US nodes offer the best connection speeds and stability I’ve experienced, with a low IP block rate. Many people see DMIT’s English interface and don’t know how to purchase. This guide walks you through the entire process. Why Choose DMIT When picking a VPS, three things matter most: latency, stability, and IP quality. ...

The previous article on multi-gateway home network architecture covered the overall design but didn’t dive into the details of writing rules. This post focuses specifically on Mihomo’s traffic splitting rules, breaking down everything from syntax basics to practical configuration templates. Basic Concepts of Rules Mihomo controls traffic splitting through the rules field. Each rule follows this format: rule-type,match-value,proxy-group For example: rules: - DOMAIN-SUFFIX,google.com,Proxy - IP-CIDR,192.168.0.0/16,DIRECT - GEOIP,CN,DIRECT - MATCH,Proxy # fallback rule — matches all remaining traffic Rules are matched in order — the first rule that matches is executed, and subsequent rules are skipped. Order is critical. ...

Anthropic’s current flagship models are Opus 4.6 (most powerful), Sonnet 4.6 (balanced), and Haiku 4.5 (fastest and cheapest). Many people use Claude for everything with Opus, resulting in API bills 3–5× higher. This article explains from a practical usage perspective: when to use Opus, when to use Sonnet, and when Haiku is worth considering. Pricing Comparison (April 2026) Model Input Price Output Price Relative Cost claude-haiku-4-5 $0.80/M tokens $4/M tokens 1× claude-sonnet-4-6 $3/M tokens $15/M tokens ~4× claude-opus-4-6 $15/M tokens $75/M tokens ~19× Opus costs nearly 20× more than Haiku. For the same task, using Opus when Sonnet can handle it is pure waste. ...

Many people entering the crypto market face this initial question: should they straight-up DCA into BTC, or use a grid trading bot? Both approaches have their passionate advocates and genuine drawbacks. This article breaks down both strategies from the perspective of an everyday investor. What Is BTC DCA? DCA (Dollar-Cost Averaging): Buy a fixed amount of BTC at fixed intervals, regardless of price. ...

💡 Mainland China Notice: Binance.com isn’t directly accessible from mainland China; you’ll need a VPN or network tool. Fiat on-ramps don’t support bank cards directly; the primary route is C2C (USDT↔CNY) trading. One of the biggest risks in live quant trading isn’t strategy losses—it’s a leaked API Key leading to account theft. Accidentally pushing your key to GitHub, a VPS getting compromised, or logs being exposed can wipe your account clean instantly. Any single mistake can be catastrophic. ...

Hysteria2 is a proxy tool based on the QUIC protocol (UDP) that significantly outperforms TCP in high-loss and high-latency networks. It complements VLESS+XTLS-Reality: use Hysteria2 when TCP is throttled, and VLESS+Reality when UDP is blocked—deploying both protocols together is currently the most stable approach. Why Choose Hysteria2 Core advantages: QUIC/UDP-based, maintains good speed even in high-loss networks Built-in bandwidth obfuscation makes traffic patterns harder to identify precisely Simple configuration, lighter weight than Xray Native support in mihomo (Clash Meta) Use cases: ...