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Datahike with Postgres as data storage

License: Eclipse Public License 1.0

Clojure 100.00%

datahike-postgres's Introduction

replikativ

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Changelog

Roadmap (suggestions)

0.3.0

Investigate JS side integration of http://y-js.org/
Investigate integration with similar systems, eg. IPFS pubsub
Split middleware from replicated datatype implementations
Improve network IO library kabel (Android support) [DONE]
Move hashing into fetch middleware to simplify parallelization. [DONE]
Experimental automatic Gossip protocol
Experimental Snapshot Isolation
Build reasonable small support libraries to partition application data for efficient client side consumption, Datomic and Datascript. Look into datsync etc.
Add a monitoring interface as a cljs library with basic web views for applications to communicate their synching state to the user in a uniform way. [DONE]
Introduce clojure.spec to stage/... API.

0.4.0

Authentication with signed public-private key signatures
Model some level of consistency between CRDTs, probably Snapshot Isolation, to compose CRDTs. (NMSI, Antidote, research)
Implement more useful CRDTs (counter, vector-clock, ...) from techreview and other papers and ship by default.

0.5.0

Use p2p block distribution similar to BitTorrent for immutable values (similar to blocks)
support WebRTC for value distribution similar to BitTorrent
Java bindings

Long-term (1.0.0)

Encryption of transaction with CRDT key encrypted by userkeys, public key schema, explore pub/private key solutions. Maybe metadata signing can work (slowly) on a DHT?
Distribute bandwidth between CRDTs.
Negotiate middlewares with versioning.
Implement diverse prototypes, from real-time to "big-data".

Contributors

Konrad Kuehne
Christian Weilbach

Support

If you would like to get some commercial support for replikativ, feel free to contact us at lambdaforge.

License

Distributed under the Eclipse Public License, the same as Clojure.

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timokramer mauricioszabo

datahike-postgres's Issues

update to Datahike 0.3.0 release

create-database should return boolean

Similar to datomic's api, create-database should return boolean value, true if database is created and false if database was not created (due to it already existing etc). Now it throws an uncaught runtime exception.

add documentation about usage and link to relevant datahike documentation

remove IDE files

create-database causes error on lein uberjar

I have a very simple project that i generated using luminus. The project is basically empty but i have this file:

(ns clan.db.core
  (:require [datahike.api :as d]
            [datahike-postgres.core]
            [mount.core :as mount]))

(def datahike-cfg {:backend  :pg
                   :host     "localhost"
                   :port     5432
                   :username "postgres"
                   :password "postgres"
                   :path     "/clan"})

(d/create-database datahike-cfg)

(mount/defstate conn
                :start (d/connect datahike-cfg))

When running lein uberjar i get the following error:

Compiling clan.db.core
Syntax error macroexpanding at (core.clj:13:1).
Execution error (ExceptionInfo) at konserve-pg.core/new-pg-store$fn$state-machine$fn$fn (core.clj:153).
Cannot connect to PostgreSQL.

Full report at:
/tmp/clojure-3147988878089586605.edn
Compilation failed: Subprocess failed

If i remove the (d/create-database ...) line the project will compile just fine. My question is why would that function be called on compilation? Any help would be much appreciated.

Relationship between row counts and entities

Hi,
I'm looking to test datahike on a small heroku postgres app and I'm wondering if there's a relationship between entity count and row's created?

The reason I'm asking is heroku's basic databases have row limits and I just don't want to just hit them.

An interesting option would be to use PostgreSQL with a foreign data wrapper + RocksDB

Hello,

I think this solution has potential because it provides a single interface for accessing two types of data stores: relational and key value.

PostgreSQL has added support for custom storage engines so things should improve in the future.
In the mean time, the foreign data wrapper API allows you to use other types of storage in PostgrSQL.

The people from VidarDB created an extension to use RocksDB (LevelDB fork) .

https://github.com/vidardb/PostgresForeignDataWrapper

Can't run example on README

My configuration for PostgreSQL is the following:

(def cfg {:store {:backend :pg
                  :host "localhost"
                  :port 5432
                  :user "postgres"
                  :password ""
                  :dbname "dhike"}})

As I'm currently running locally, I don't need a password. This is printed on the console when I try to connect to Datahike:

INFO: No default configuration found for :pg
INFO: Not configuration spec found for :pg
WARNING: JDBC URL must contain a / at the end of the host or port: jdbc:postgresql://localhost:5432

replikativ / datahike-postgres Goto Github PK

datahike-postgres's Introduction

replikativ

Roadmap (suggestions)

0.3.0

0.4.0

0.5.0

Long-term (1.0.0)

Contributors

Support

License

datahike-postgres's People

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datahike-postgres's Issues

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