npm/seq-save

Name: seq-save

Owner: npm

Description: save a sequence # to a configurable backend (etcd, files, etc.)

Created: 2017-10-24 22:11:55.0

Updated: 2017-10-27 19:15:57.0

Pushed: 2017-10-25 21:30:31.0

Homepage: null

Size: 47

Language: JavaScript

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README

seq-save

Save CouchDB sequence #s to a configurable backend. This allows you to resume CouchDB replication from the point where you left off.

see also: changes-stream.

This is a replacement to seq-file, adding support for additional backends.

API

• SeqSave(path, opts): where path is the path on disk to save the file to or the key to use for an alternative backend, such as etcd. Returns a new sequence saving instance.
• <Promise> save.save(sequence): save the sequence to the configured backend. Returns a Promise which will resolve once the value is saved.
• <Promise> save.read(): Returns a Promise that will resolve with the current sequence #.

Backends

File (Default)

To save sequence files to the filesystem, simply provide the following configuration:

t SeqSave = require('seq-save')
t seq = new SeqSave('my-sequence.seq', {
pe: 'file'

It's worth noting that file is the default backend, so you can also simply provide an empty configuration object..

etcd

To save sequence files to etcd, simply provide the following configuration:

t Save = require('seq-save')
t seq = new SeqSave('my-sequence.seq', {
pe: 'etcd',
st: 'http://127.0.0.1:2379'