Last updated on 2015-02-11
About the Book
Node.js has been designed to do quick and efficient network I/O. It's event-driven streams make it ideal to be used as a kind of smart proxy, often working as the glue between back-end systems and clients. Node was originally designed with that intention in mind, but meanwhile it also has been successfully used to build traditional web applications: an HTTP server that serves HTML pages or replies JSON messages and uses a database to store the data. Even though web frameworks in other platforms and languages have preferred to stick with traditional open-source relational databases like MySQL or PostgreSQL, most of the existing Node web frameworks (like Express, Hapi and others) don't impose any database or even any type of database at all. This bring-your-own-database approach has been in part fed by the explosion in the variety of database servers now available, but also by the ease with which the Node module system and NPM allow you to install and use third-party libraries.
In this book we will analyze some of the existing solutions for interacting with some types of databases and what interesting uses can you give them. This first short book on databases starts with some of my favourites: LevelDB, Redis and CouchDB.
- 1. The source code
- 2. Introduction
3. An embedded database using LevelDB
- 3.1 Installing LevelDB
- 3.2 Using LevelDB
- 3.3 Encodings
- 3.4 Using JSON for encoding values
- 3.5 Batch operations
3.6 Using a readable stream
- 3.6.1 Using ranges
- 3.6.2 Limiting the number of results
- 3.6.3 A consistent snapshot
- 3.6.4 Using ranges to partition the data
3.7 Using level-sublevel
- 3.7.1 Batch in different sublevels
- 3.8 Hooks
4.1 Redis primitives
- 4.1.1 Strings
- 4.1.2 Key expiration
- 4.1.3 Transactions
- 4.1.4 Command results in Multi
- 4.1.5 Optimistic locking using WATCH
4.1.6 Transactions using Lua scripts
- 22.214.171.124 Caching Lua scripts
- 126.96.36.199 Performance
- 4.1.7 Integers
- 4.1.8 Using counters
- 4.1.9 Dictionaries
- 4.1.10 Redis dictionary counters
- 188.8.131.52 Avoid polling
- 184.108.40.206 Not losing work
- 220.127.116.11 Intersecting sets
- 4.1.13 Sorted Sets
- 4.1.14 Pub-sub
4.1.15 Distributed Emitter
- 18.104.22.168 Beware of race conditions
- 4.1 Redis primitives
- 5.1 Starting off
- 5.2 Ladies and Gentlemen, start your Nodes
- 5.3 Overriding the HTTP agent socket pool
- 5.4 The directory structure
- 5.5 Creating documents with a specific ID
- 5.6 Forcing a schema
5.7 Unifying errors
- 5.7.1 How to consume Boom errors
5.8 Updating specific fields while handling conflicts
- 5.8.1 Delegate conflicts entirely to the client.
- 5.8.2 Diff doc with last write wins.
- 5.8.3 Disallowing changes to specific fields
5.9.1 Inverted indexes
- 22.214.171.124 Query
- 5.9.2 Multi-value inverted indexes
5.9.3 Paginating results
- 126.96.36.199 The wrong way of doing pagination
- 188.8.131.52 A better way of paginating
- 5.9.4 Reducing
- 5.9.1 Inverted indexes
5.10 Using the Changes Feed
- 5.10.1 Minimising the chance of repeated jobs
- 5.10.2 Recording the sequence
- 5.10.3 Scaling: how to support more than one job in parallel
- 5.10.4 Balancing work: how to use more than one worker process
The Leanpub 45-day 100% Happiness Guarantee
Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.