May chu Web3 backend: ha tang cho dApp, NFT marketplace, va Web3 indexer
Web3 development o Viet Nam dang phat trien nhanh, voi nhieu team xay dung dApp, NFT marketplace, GameFi, va Web3 social. Backend cho cac san pham nay phuc tap hon Web2 truyen thong: can ket noi toi Ethereum/Polygon/Arbitrum node, xu ly event tu smart contract real-time, va luu tru off-chain data (IPFS, Arweave) ket hop on-chain. AnubizHost cung cap VPS Medium hoac Large da cau hinh san cho Web3 development: Geth/Erigon node cho Ethereum mainnet, Polygon/Arbitrum node, The Graph subgraph deployment, va Hardhat/Foundry development environment. Vi tri Iceland va Ha Lan dam bao tre thap toi major node provider.
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Tu chay node vs dung RPC dich vu
Cho dApp chay nho moi ngay (< 10000 user), dung RPC dich vu nhu Infura, Alchemy, hay QuickNode la kinh te. Tier free thuong cho 100k request/ngay. Khi scale lon hon, chi phi tang nhanh - $50-500/thang cho production tier. Tu chay Ethereum node tren VPS Large $86/thang la kha thi va co loi the: khong gioi han rate limit, queries hoan toan privately, va kiem soat hoan toan ve version cua node software. Trade-off: maintenance va disk space yeu cau. Erigon node Ethereum mainnet can 1.5TB+ disk va 16GB+ RAM cho full node. Polygon mainnet can 2TB+ disk, Arbitrum One can 800GB+. AnubizHost cung cap VPS Large 320GB NVMe phu hop cho Erigon pruned node, hoac Dedicated server voi 2-4TB NVMe cho full node hoac multi-chain node.
Subgraph va event indexing voi The Graph
Real-time event indexing la cot loi cua nhieu dApp. Vi du, NFT marketplace can biet ngay khi co transfer event de update UI, va GameFi can track moi mint, trade, va combine event. The Graph la giai phap chinh: viet subgraph trong AssemblyScript, deploy len The Graph network (decentralized) hoac self-hosted, va query qua GraphQL. AnubizHost cung cap VPS Medium voi The Graph node tu host - cau hinh Postgres + IPFS + graph-node, ket noi toi Ethereum archive RPC. Voi VPS Large, ban co the chay multi-chain subgraph (Ethereum + Polygon + Arbitrum) tren cung VPS, voi 50+ subgraph dong thoi cho cac dApp khac nhau. Tu host subgraph tranh phu thuoc vao The Graph Network va cho phep custom indexing logic phuc tap.
NFT marketplace backend va storage architecture
NFT marketplace can: smart contract integration (mint, list, buy), metadata storage (IPFS hoac Arweave), search va filter API, va frontend tinh ung. Backend tren VPS thuong la NestJS hoac Django voi PostgreSQL cho off-chain data (user account, listing cache, view count), Redis cho caching, va worker process listen smart contract events. IPFS pinning service yeu cau VPS rieng (IPFS daemon dung nhieu CPU va bandwidth) - AnubizHost cung cap setup IPFS chuyen biet voi pinning automation. Voi VPS Medium 4 vCPU 8GB RAM, ban co the chay backend cho marketplace 10000-50000 active user. Voi Large, scale len 100000+. AnubizHost ho tro setup CDN integration (Bunny CDN, jsDelivr) cho metadata phuc vu nhanh, va Cloudflare DDoS protection cho frontend.
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