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graph TD
    A[Start of a Transaction] --> B[Assign Read TS]
    B --> C[Reading from a Snapshot]
    C --> D[Perform Read Operation]
    D --> E{TS <= Read TS?}
    E -- Yes --> F[Return Committed Data]
    E -- No --> G[Ignore Uncommitted Data]
    A --> H[Writing with Snapshot Isolation]
    H --> I[Check Memtable for Conflicts]

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---
IIP: 2
title: Data Retention in Immudb
author: Farhan Khan <[email protected]>
status: Proposal
category: Storage
created: 2022-10-18
---

### Abstract

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Data Retention/Truncation Command Line Interface (CLI) Documentation

Introduction: The truncation command is an extention to the immuadmin CLI to perform data retention operations on a database. It supports parameters to specify the retention period and truncation frequency.

Usage: The CLI is invoked from the command line with the following syntax:

./immuadmin database create db [OPTIONS]

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// Font is the flyweight object
type Font struct {
    fontType string
    fontSize int
    fontColor string
}

// FontFactory is the flyweight factory
type FontFactory struct {
    fonts map[string]*Font

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package main

import (
	"fmt"
	"sync"
)

type Character struct {
	Appearance string
	Name       string

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package main

import (
	"fmt"
	"sync"
)

type RequestHandler struct {
	sharedState string
}

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package main

import (
    "sync"
    "time"
)

var objectPool = sync.Pool{
    New: func() interface{} {
        return time.Now()

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package main

import (
    "image"
    "sync"
)

var imageCache = sync.Map{}

func getImage(path string) image.Image {

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package main

import (
    "database/sql"
    "sync"
)

var connectionPool = sync.Pool{
    New: func() interface{} {
        db, _ := sql.Open("postgres", "user=postgres dbname=mydb sslmode=disable")

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package main

import "fmt"

func main() {
    s1 := "hello"
    s2 := "hello"
    fmt.Println(&s1 == &s2) // true
}