joelonsql

🗺🐘 1000+ PostgreSQL EXTENSIONs

This is a list of URLs to PostgreSQL EXTENSION repos, listed in alphabetical order of parent repo, with active forks listed under each parent.

⭐️ >= 10 stars
⭐️⭐️ >= 100 stars
⭐️⭐️⭐️ >= 1000 stars
Numbers of stars might not be up-to-date.

xsqian

# create a topic with specified partitons
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --create --partitions 2 --topic test-partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --describe --topic test-partitions

# create a topic with default partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --create  --topic test-def-partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --describe --topic test-def-partitions

# alter the number of partitions of an existing topic
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --alter --topic test-def-partitions --partitions 3

NAKsir-melody

package main

import (
	"fmt"
    "github.com/ethereum/go-ethereum/core/rawdb"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/core/state"
    "github.com/ethereum/go-ethereum/rlp"
	"github.com/ethereum/go-ethereum/trie"
	_ "github.com/ethereum/go-ethereum/common"

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD