Beyond Profilers: Tracing Node.js Transactions
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Node.js is fast, but once the code is in production, how can you make sure it's still fast? In this talk from the Boston node.js meetup on October 9th, I talk about various strategies for monitoring node in production, with an obvious bias towards transaction tracing.
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- 1. Beyond Profilers: Tracing Node.js Transactions TR Jordan October 2014
- 3. users browser internet webserver application database cache external API
- 4. users browser internet webserver application database cache external API
- 5. Throughput vs. Network Capacity
- 6. users browser internet webserver application database cache external API
- 11. users browser internet webserver application database cache external API
- 12. Request ID + Operation IDs + Other Stuff™
- 18. Code
- 19. var http = require('http'); var shimmer = require('shimmer'); shimmer.wrap(http, 'request', function (original) { return function () { console.log("Starting request!"); var returned = original.apply(this, arguments) console.log("Done setting up request"); return returned; }; });
- 20. shimmer.wrap(collection.prototype, 'update', function (fn) { return function (query, doc, options, callback) { if (typeof options === 'function') { callback = options options = {} } var run = fn.bind(this, query, doc, options) return attempt(run, this.collectionName, this.db, { QueryOp: 'update', Query: JSON.stringify(query), Update_Document: JSON.stringify(doc) }, callback) } })
- 21. Challenges
- 22. Initial Function Callback Callback Callback Callback User
- 23. Initial Function Callback Callback Callback Callback User
- 24. Node Work Queue Callback
- 25. C++ Node OS Work Queue Callback
- 27. Initial Function Callback Callback Callback Callback User
- 29. Tracelyzer via UDP 5 0 0
- 30. Thanks! Connect. @_tr tjordan@appneta.com Read. • On the Blog: happneta.com/blog/x-trace-introduction/ • On GitHub: github.com/appneta/node-traceview We’re Hiring!