benbjohnson

benbjohnson

Steps

1. Setup Go cross-compile using Dave Cheney's instructions & package.

2. Copy the myapp.conf file to /etc/init/myapp.conf. Change the name of the service to whatever you want to call it.

3. Change the name parameter in myapp.conf to your application's name.

4. Change the script / end script block to whatever you need to startup your app.

benbjohnson

package foo

func foo() { kajsd hkasjdh kasjhd aksjhd kasjhd kjahsd kjahsd kajshd kajhsd kasjhd kajshd kajshd kajshd kajshd kasjdh kajshd kasjhd 
 
}

benbjohnson

package myapp

// Tx represents a transaction in the application.
type Tx struct {
	*sql.Tx
}

// User retrieves a user by ID.
func (tx *Tx) User(id int) (*User, error) {
	u := &User{tx: tx}

benbjohnson

Bolt Error Handling

It's better to simply return the errors that occur from Tx.CreateBucket() and Bucket.Put() because they will rollback the transaction and the error will be returned from DB.Update(). Then you can just check the error from DB.Update().

The DB.Update() can also fail (e.g. the disk write may fail) so you should always check the return error from it.

benbjohnson

package main

import (
	"flag"
	"log"
	
	"github.com/benbjohnson/myapp"
)

func main() {

benbjohnson

# Sequentially insert 1M key/value pairs (in 1000 record batches).
$ bolt bench --count 1000000 --batch-size 1000
# Write	3.939999671s	(3.939us/op)	(253871 op/sec)
# Read	1.003326413s	(40ns/op)	(25000000 op/sec)

---------

# Randomly insert 1M key/value pairs (in 1000 record batches).
$ bolt bench --count 1000000 --batch-size 1000 --write-mode rnd
# Write	56.84787703s	(56.847us/op)	(17591 op/sec)

benbjohnson

package store

import (
	"fmt"

	"github.com/boltdb/bolt"
)

// reap removes sessions older than a given duration.
// This function assumes that all session data is stored in a "sessions" bucket

benbjohnson

$ go get github.com/benbjohnson/megajson
$ go test -test.bench=. github.com/benbjohnson/megajson/...
BenchmarkScanNumber	50000000	        55.3 ns/op	  54.25 MB/s
BenchmarkScanString	20000000	        95.3 ns/op	 104.92 MB/s
BenchmarkScanLongString	 5000000	       460 ns/op	 123.79 MB/s
BenchmarkScanEscapedString	20000000	       141 ns/op	 127.27 MB/s
BenchmarkReadString	20000000	       146 ns/op	  68.36 MB/s
BenchmarkReadLongString	 5000000	       533 ns/op	 106.76 MB/s
BenchmarkReadInt	50000000	        58.9 ns/op	  84.86 MB/s
BenchmarkReadFloat64	10000000	       154 ns/op	 103.63 MB/s

benbjohnson

package main

import (
	"encoding/binary"
	"log"
	"time"

	"github.com/boltdb/bolt"
)