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* Use normalizer as stream source Renamed 'writer' service to 'normalizer' and dropped Cassandra facilities from it. Extracted the common dependencies to 'mainflux' package for easier sharing. Fixed the API docs and unified environment variables. Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Use docker build arguments to specify build Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Remove cassandra libraries Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Update go-kit version to 0.6.0 Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Fix manager configuration Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Refactor docker-compose Merged individual compose files and dropped external links. Remove CoAP container since it is not referenced from NginX config at the moment. Update port mapping in compose and nginx.conf. Dropped bin scripts. Updated service documentation. Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Drop content-type check Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Implement users data access layer in PostgreSQL Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Bump version to 0.1.0 Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Use go-kit logger everywhere (except CoAP) Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Improve factory methods naming Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Implement clients data access layer on PostgreSQL Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Make tests stateless All tests are refactored to use map-based table-driven tests. No cross-tests dependencies is present anymore. Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Remove gitignore Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Fix nginx proxying Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Mark client-user FK explicit Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Update API documentation Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Update channel model Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Add channel PostgreSQL repository tests Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Implement PostgreSQL channels DAO Replaced update queries with raw SQL. Explicitly defined M2M table due to difficulties of ensuring the referential integrity through GORM. Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Expose connection endpoints Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Fix swagger docs and remove DB logging Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Fix nested query remarks Signed-off-by: Dejan Mijic <dejan@mainflux.com> * Add unique indices Signed-off-by: Dejan Mijic <dejan@mainflux.com>
NUID
A highly performant unique identifier generator.
Installation
Use the go command:
$ go get github.com/nats-io/nuid
Basic Usage
// Utilize the global locked instance
nuid := nuid.Next()
// Create an instance, these are not locked.
n := nuid.New()
nuid = n.Next()
// Generate a new crypto/rand seeded prefix.
// Generally not needed, happens automatically.
n.RandomizePrefix()
Performance
NUID needs to be very fast to generate and be truly unique, all while being entropy pool friendly. NUID uses 12 bytes of crypto generated data (entropy draining), and 10 bytes of pseudo-random sequential data that increments with a pseudo-random increment.
Total length of a NUID string is 22 bytes of base 36 ascii text, so 36^22 or 17324272922341479351919144385642496 possibilities.
NUID can generate identifiers as fast as 60ns, or ~16 million per second. There is an associated benchmark you can use to test performance on your own hardware.
License
(The MIT License)
Copyright (c) 2016 Apcera Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.