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Key Points
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Fauxton setup
Go to couchdb.apache.org, and click download
Learn how to install and setup CouchDB from here, then go to http://127.0.0.1:5984/_utils
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Request
Response
Error protocols
PSCouchDB, a complete and Object Oriented cli for CouchDB
Matteo Guadrini <matteo.guadrini@hotmail.it>
Mon, Jun 27 at 4:39 AM
Hello everybody,
I wanted to announce the new version of PSCouchDB, a complete and Object Oriented cli for CouchDB, written in powershell (running on any operating system).
Find the release notes here: https://github.com/MatteoGuadrini/PSCouchDB/releases/tag/2.5.0
Other useful links
Installation: https://github.com/MatteoGuadrini/PSCouchDB#installation-and-simple-usage
Full docs: https://pscouchdb.readthedocs.io/en/latest/
PowershellGallery: https://www.powershellgallery.com/packages/PSCouchDB/2.5.0
Site: https://matteoguadrini.github.io/PSCouchDB
Thanks to everyone!
Matteo Guadrini
Potential Value Opportunities
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Engineering CouchDB Networks
mesh-like architecture which uses CouchDB replication protocol to
distribute/aggregate data is perfectly viable. As well as other members of
the ML I also have several projects employing this approach. And like
others I also can not disclose any details, even qty of nodes involved; you
better be ready to see this attitude for any mesh-related project, because
they often involve processing sensitive personal, industry or
infrastructure data in vast amounts.
However, I have a lot of observations, main are:
- whenever possible use CouchDB, not Pouch, because failure rate of
Pouch instances on whatever platform is much higher overall
- CouchDB is able to run for years without getting down, Pouch is not so
sturdy, there exist a bunch of ways to knock down Pouch node with a single
request
- on mobile devices you better avoid constantly growing DBs, you may
loose data and DB integrity eventually
- a single doc rejected by Couch during upstream replication from Pouch
can block entire process of replication, you can easily get the situation
when sync just can’t restart – so carefully check what you store in Pouch,
especially attachments size
- get ready to spend a lot of time debugging Pouch—Couch routes having
enormous latencies (like sync through satellites or 14400 GPRS connections)
- mesh CouchDB networks tend to have very fast growing logs, reason is
the number of repeated connections from different peers, so take care of it
- do not distribute mesh topology across nodes using CouchDB
replication, this approach looks inviting but brings a lot of risks.
Best regards.
ermouth
Issue - Using a JDBC driver to connect ot CouchDB
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Programming language bindingsFoundationDB supports language bindings for Python, Go, Ruby, Node.js, Java, PHP, and C, all of which are made available with the product.[13]
Design limitations[edit]
The design of FoundationDB results in several limitations:
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https://apple.github.io/foundationdb/performance.html
FoundationDB uses commodity hardware to provide high throughputs and low latencies to your application at a variety of scales
FoundationDB scales linearly with the number of cores in a cluster over a wide range of sizes.
Here, a cluster of commodity hardware scales to 8.2 million operations/sec doing a 90% read and 10% write workload with 16 byte keys and values between 8 and 100 bytes.
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