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dvirsky / gist:dfdfd4066c70e8391dc5
Created December 24, 2014 13:45
Checking is a function was deferred or not
package main
package redis
import (
// Batch represents a set of batched results, either a transaction or just send/receive.
dvirsky /
Last active August 29, 2015 14:20 — forked from jonhoo/

Distributed Read-Write Mutex in Go

The default Go implementation of sync.RWMutex does not scale well to multiple cores, as all readers contend on the same memory location when they all try to atomically increment it. This gist explores an n-way RWMutex, also known as a "big reader" lock, which gives each CPU core its own RWMutex. Readers take only a read lock local to their core, whereas writers must take all locks in order.

dvirsky / disque_example.go
Created May 3, 2015 13:32
Disque Usage example
package main
package main
import (
var vocabulary = []string{"foo", "bar", "baz", "hey", "yo", "go"}
package foo
import (
type Foo struct {
a string
b int
c float32
dvirsky / gist:f9ebf6f66f763a356d4a
Created November 19, 2014 11:58
Long running Python Parent/Child communication via pipes
import subprocess
import time
import sys
def parent():
p = subprocess.Popen(['python', './', '--child'], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
// A serializer prototype - you serialize by calling Write N times.
// the key type is determined on registration so not needed here
// the list size will be determined by redis when you exit, based on the number of times you called write()
int (*Serialize)(RedisModuleCtx *ctx, RedisModuleObjectWriter *out, RedisModuleKey *k)
// you deserialize by calling Read and reading one object at a time.
// numElements is passed so the user can preallocate stuff in advance
int (*Deserialize)(RedisModuleCtx *ctx, RedisModuleObjectReader *in, RedisModuleString *keyName, size_t numElements)
dvirsky / tasks.json
Created September 20, 2016 11:41
tasks.json for building and testing generic go projects in vscode
"version": "0.1.0",
"isShellCommand": true,
"showOutput": "always",
"command": "go",
"echoCommand": true ,
"options": {
"cwd": "${fileDirname}"
"tasks": [
dvirsky / example.txt
Last active September 26, 2016 16:15
index example
# creating an index:> IDX.CREATE users TYPE HASH SCHEMA name STRING age INT32
# running HASH commands while indexing them:> IDX.INTO users HMSET user1 name "alice" age 24
OK> IDX.INTO users HMSET user2 name "bob" age 19