I'm not technical. Can I work with iDev?

Absolutely. Most of our clients are non-technical. Just tell us what you want the end result to look like — we handle all the technical details.

How much does it cost to hire iDev?

We quote individually based on project scope and complexity. Initial consultation is completely free — we give you a clear quote after understanding your needs. No fit, no charge.

How big is the iDev team?

A few core members, each capable of delivering full-stack independently. We flexibly assign people based on project scale and can run multiple projects simultaneously.

What happens after project delivery?

We provide complete code and documentation at handover. For ongoing feature development or maintenance, we offer monthly or per-project arrangements. Most clients choose long-term collaboration.

What if I'm not satisfied with the project midway?

We confirm with you at every stage before moving forward. If the direction is off, we adjust immediately. If it truly can't continue, completed work is settled normally and all code is yours.

我完全不懂技术，能合作吗？

当然可以。我们的大部分客户都不是技术背景。你只需要告诉我们你想要什么效果，技术实现的事情完全由我们来处理。

费用大概是多少？

根据项目复杂度和功能范围单独报价。初次沟通完全免费，我们会在了解需求后给出明确报价，合适再开始，不合适不收费。

团队有几个人？

核心团队几个人，都是能独立交付的全栈开发者。根据项目规模灵活安排人手，可以同时推进多个项目，不用等排期。

项目做完以后怎么维护？

交付时会提供完整的代码和文档。后续如果需要功能迭代或维护，可以按月或按次合作。大部分客户选择了长期合作。

做到一半不满意怎么办？

每个阶段交付前都会和你确认。如果方向不对，我们及时调整。如果实在无法继续，已完成的部分正常结算，代码归你。

SQLite WASM：在浏览器中运行完整关系数据库的终极方案

SQLite WASM: The Ultimate Solution for Running a Full Relational Database in the Browser

| iDev PR | 2026-08-30T09:21:50

探索 SQLite 官方 WASM 构建版的能力边界，分析其在离线优先应用、本地数据分析和边缘计算场景中的实践价值。

Exploring the capability boundaries of SQLite's official WASM build, analyzing its practical value in offline-first applications, local data analysis, and edge computing scenarios.

浏览器里的关系数据库SQLite 官方 WASM 构建版已经成熟到可以在生产环境使用。借助 Origin Private File System（OPFS）API，SQLite WASM 可以在浏览器中持久化存储数据，性能接近原生水平。技术架构SQLite WASM 有三种运行模式：内存模式：数据完全在内存中，页面关闭即丢失，适合临时数据分析OPFS 模式：使用 Origin Private File System 持久化，数据跨会话保留Worker 模式：在 Web Worker 中运行，避免阻塞主线程性能表现我们在 Chrome 128 中测试了 SQLite WASM 的性能：插入性能：批量插入 100 万条记录约需 3.2 秒（使用事务）查询性能：对 100 万条记录的聚合查询平均耗时 180ms索引查询：对索引列的点查询耗时小于 1ms数据库大小：最大支持数据库文件约 2GB（受浏览器 OPFS 配额限制）实际应用场景离线优先应用：用户在无网络时也能完整使用应用，联网后自动同步本地数据分析工具：用户上传 CSV 后直接在浏览器中执行 SQL 分析表单构建器：将表单数据本地存储，减少服务器请求嵌入式报表：在前端直接运行复杂的数据聚合查询局限性需要注意的限制包括：OPFS 在隐身模式下不可用；多标签页并发访问需要额外的锁机制；大数据量场景下初始加载时间可能较长。此外，Safari 对 OPFS 的支持仍有部分限制，需要做好兼容处理。

A Relational Database in the BrowserSQLite's official WASM build has matured to production readiness. With the Origin Private File System (OPFS) API, SQLite WASM can persist data in the browser with near-native performance.Technical ArchitectureSQLite WASM offers three operating modes:In-memory mode: Data entirely in memory, lost on page close, suitable for temporary data analysisOPFS mode: Persistent storage using Origin Private File System, data retained across sessionsWorker mode: Runs in a Web Worker to avoid blocking the main threadPerformance ResultsWe tested SQLite WASM performance in Chrome 128:Insert performance: Bulk inserting 1 million records takes approximately 3.2 seconds (using transactions)Query performance: Aggregate queries on 1 million records average 180msIndexed queries: Point queries on indexed columns take less than 1msDatabase size: Maximum database file of approximately 2GB (limited by browser OPFS quota)Practical ApplicationsOffline-first apps: Users can fully use the app without network, auto-syncing when reconnectedLocal data analysis tools: Users upload CSV and execute SQL analysis directly in the browserForm builders: Store form data locally to reduce server requestsEmbedded reports: Run complex data aggregation queries directly on the frontendLimitationsNotable limitations include: OPFS is unavailable in incognito mode; multi-tab concurrent access requires additional locking mechanisms; initial load times may be lengthy with large datasets. Additionally, Safari's OPFS support still has partial limitations requiring compatibility handling.

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