The following gist is an extract of the article Flask-SQLAlchemy Caching. It allows automated simple cache query and invalidation of cache relations through event among other features.
# pulling one User object
user = User.query.get(1)
package main | |
import ( | |
"bytes" | |
"code.google.com/p/go.crypto/ssh" | |
"fmt" | |
"log" | |
"net" | |
"os" | |
) |
The following gist is an extract of the article Flask-SQLAlchemy Caching. It allows automated simple cache query and invalidation of cache relations through event among other features.
# pulling one User object
user = User.query.get(1)
- What do Etcd, Consul, and Zookeeper do? | |
- Service Registration: | |
- Host, port number, and sometimes authentication credentials, protocols, versions | |
numbers, and/or environment details. | |
- Service Discovery: | |
- Ability for client application to query the central registry to learn of service location. | |
- Consistent and durable general-purpose K/V store across distributed system. | |
- Some solutions support this better than others. | |
- Based on Paxos or some derivative (i.e. Raft) algorithm to quickly converge to a consistent state. | |
- Centralized locking can be based on this K/V store. |
default.target.wants/ | |
nexus |
// A small SSH daemon providing bash sessions | |
// | |
// Server: | |
// cd my/new/dir/ | |
// #generate server keypair | |
// ssh-keygen -t rsa | |
// go get -v . | |
// go run sshd.go | |
// | |
// Client: |
* |
UNLOGGED
table. This reduces the amount of data written to persistent storage by up to 2x.WITH (autovacuum_enabled=false)
on the table. This saves CPU time and IO bandwidth
on useless vacuuming of the table (since we never DELETE
or UPDATE
the table).COPY FROM STDIN
. This is the fastest possible approach to insert rows into table.time timestamp with time zone
is enough.synchronous_commit = off
to postgresql.conf
.// see https://books.sonatype.com/nexus-book/3.0/reference/scripting.html | |
// see https://github.com/sonatype/nexus-book-examples/tree/nexus-3.0.x/scripting/nexus-script-example | |
import groovy.json.JsonOutput | |
import org.sonatype.nexus.security.user.UserSearchCriteria | |
import org.sonatype.nexus.security.authc.apikey.ApiKeyStore | |
import org.sonatype.nexus.security.realm.RealmManager | |
import org.apache.shiro.subject.SimplePrincipalCollection | |
import org.sonatype.nexus.scheduling.TaskScheduler | |
import org.sonatype.nexus.scheduling.schedule.Daily |
A curated list of AWS resources to prepare for the AWS Certifications
A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.
The following commands will start a container with Kafka and Zookeeper running on mapped ports 2181 (Zookeeper) and 9092 (Kafka).
docker pull spotify/kafka
docker run -d -p 2181:2181 -p 9092:9092 --env ADVERTISED_HOST=kafka --env ADVERTISED_PORT=9092 --name kafka spotify/kafka
ADVERTISTED_HOST
was set to kafka
, which will allow other containers to be able to run Producers and Consumers.