### Install Retryable DNS Library

Source: https://github.com/projectdiscovery/retryabledns/blob/main/README.md

Install the retryabledns library using go get. This command downloads the source code into your Go workspace.

```bash
go get github.com/projectdiscovery/retryabledns
```

--------------------------------

### Basic DNS Resolution Example

Source: https://github.com/projectdiscovery/retryabledns/blob/main/README.md

Demonstrates how to create a new retryabledns client and resolve a hostname to IP addresses. Supports custom resolvers, retry counts, and various protocols.

```go
package main

import (
    "log"

    "github.com/projectdiscovery/retryabledns"
    "github.com/miekg/dns"
)

func main() {
    // It requires a list of resolvers.
    // Valid protocols are "udp", "tcp", "doh", "dot". Default are "udp".
    resolvers := []string{"8.8.8.8:53", "8.8.4.4:53", "tcp:1.1.1.1"}
    retries := 2
    hostname := "hackerone.com"

    dnsClient, err := retryabledns.New(resolvers, retries)
    if err != nil {
        log.Fatal(err)
    }

    ips, err := dnsClient.Resolve(hostname)
    if err != nil {
        log.Fatal(err)
    }

    log.Println(ips)

    // Query Types: dns.TypeA, dns.TypeNS, dns.TypeCNAME, dns.TypeSOA, dns.TypePTR, dns.TypeMX, dns.TypeANY
    // dns.TypeTXT, dns.TypeAAAA, dns.TypeSRV (from github.com/miekg/dns)
    // retryabledns.ErrRetriesExceeded will be returned if a result isn't returned in max retries
    dnsResponses, err := dnsClient.Query(hostname, dns.TypeA)
    if err != nil {
        log.Fatal(err)
    }

    log.Println(dnsResponses)
}
```

--------------------------------

### Configure Hosts File Processing Limit

Source: https://github.com/projectdiscovery/retryabledns/blob/main/README.md

Adjust the maximum number of lines processed from the /etc/hosts file. The default is 4096 lines.

```go
hostsfile.MaxLines = 10000  // Now the library will process up to 10000 lines from the hosts file
```

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