Forem: Seatgo

Laravel queue encounters "Failed to open stream: Too many open files"

Seatgo — Wed, 15 Apr 2026 02:47:48 +0000

During the execution of Laravel queues, the error "Failed to open stream: Too many open files" occurred, but the normal web service is functioning without issues. This is highly likely caused by an anomaly in the queue process.

1. Solution

We can check the current limit using:

ulimit -n

If the current limit is too low, it can be changed to 65536.

ulimit -n 65536

However, for PHP, simply modifying the LimitNOFILE limit usually does not solve the problem; we need to check other configurations.
The Laravel team has deprecated the --daemon mode because memory and resource leaks are unavoidable.
We just need to modify the supervisor configuration for our queue:
ini

2. How to troubleshoot?

We can check what is occupying the file descriptors. The specific method is as follows (shows all occupations, with the count first and the PID second):

lsof | awk '{print $2}' | sort | uniq -c | sort -nr | head -10

Once we see the usage count, we can identify which software is occupying them, making it easier to find the cause and solve the problem.

ps -p 1331 -o pid,ppid,cmd,user,%cpu,%mem,lstart

Or simply:

ps -p 1331 -f

How to Use SeatGo for QR Code Check-in and Seat Lookup in Meetings?

Seatgo — Tue, 14 Apr 2026 10:55:21 +0000

Attendees only need to open their phones to scan the QR code to access the event invitation page. They can check in by entering their name and phone number, and simultaneously view seat information, event theme, time and venue, agenda, venue layout, and other details.
If you want to implement such functions, simply follow these steps to quickly create a QR code or link for check-in and seat lookup for meetings, banquets, annual meetings, and other events.

Register an account and log in to the dashboard

The event organizer in charge only needs to visit the website, register an account on the SeatGo backend, and log in to the dashboard. It usually takes about 5 minutes to create a QR code for guest check-in and seat lookup.

Tutorial for creating and configuring the event QR code

• 1. Go to the SeatGo dashboard homepage and click "Seat Lookup" on the left menu.
• 2. Click Create, enter the event name, and select the event type.
• 3. Modify the form settings and customize the text as prompted on the page.

• 5. Obtain the event QR code, design it into a poster, and place it at the venue entrance.
• 6. Import the attendee information in bulk on the event details page.
• 7. Attendees scan the code at the event to view their seat number, table number, room number, etc., based on your event configuration.
• 8. After the meeting or event, you may export the attendee information.

The event QR code is permanently valid and can be reused. You may also display the QR code poster at the venue entrance for long-term use.

Laravel: Compressing/Decompressing Files with Zipper

Seatgo — Tue, 14 Apr 2026 02:57:02 +0000

This is a simple wrapper for the ZipArchive method with some convenient features.

Install dependencies using Composer

composer require chumper/zipper

Post-installation configuration

Chumper\Zipper\ZipperServiceProvider::class

Also, register the facade in the aliases array in config/app.php:

'Zipper' => Chumper\Zipper\Zipper::class

Compressing files

use Zipper;
$arr = glob(public_path($public_path)); //$public_path is the filename to be compressed
Zipper::make(public_path($reduce_path))->add($arr)->close();  //public_path($reduce_path) is the filename after compression

Note:

$public_path = 'aaa.txt';
$reduce_path = 'ddd.zip';
Extracting files
Extracting files

use Zipper;
Zipper::make(path_to_compressed_file)->extractTo(path_for_extracted_files);

Lumen 5.5 Released! What's New and First Look

Seatgo — Mon, 13 Apr 2026 02:14:37 +0000

Lumen 5.5 is now available for everyone. This is considered a maintenance release that upgrades the underlying packages to the Laravel 5.5 series.

Before upgrading your application to Lumen 5.5, you should review the Laravel 5.5 Upgrade Guide and make appropriate changes to your application based on the Laravel components you are using.
Once you have made the necessary adjustments to your application, you can upgrade the Lumen framework dependency in your composer.json file and run the composer update command:

"laravel/lumen-framework": "5.5.*"

For more information, please refer to the official Lumen documentation.

Lumen 5.5 New Features & Changes

So far, apart from the core changes, I haven't noticed any obvious changes in other features. Currently, the function in routes/web.php has changed. In all previous versions, $app was always used, but now it has been changed to $router:

$router->get('test','IndexController@test');

Ubuntu 22.04 システムで Nginx 1.22 をコンパイルしてインストールするチュートリアル

Seatgo — Fri, 10 Apr 2026 10:46:55 +0000

以下は Ubuntu 20.04 システム上で Nginx 1.22 をコンパイルしてインストールする簡単なチュートリアルです。

システムのソフトウェアパッケージを更新します。

sudo apt update
sudo apt upgrade

コンパイルに必要な依存関係をインストールします。

sudo apt install build-essential libpcre3-dev zlib1g-dev libssl-dev libxml2-dev libxslt1-dev libgd-dev libgeoip-dev libperl-dev

Nginx のソースコードをダウンロードします。

wget http://nginx.org/download/nginx-1.22.0.tar.gz
tar -zxvf nginx-1.22.0.tar.gz
cd nginx-1.22.0

コンパイルオプションを設定します。

./configure --prefix=/usr/local/nginx --with-http_ssl_module --with-http_stub_status_module --with-pcre --with-http_gzip_static_module

Nginx をコンパイルしてインストールします。

sudo make && make install

インストールを検証します。

/usr/local/nginx/sbin/nginx -v

インストールに成功すると、Nginx のバージョン情報が表示されます。

Nginx を起動します。

sudo /usr/local/nginx/sbin/nginx
ブラウザにサーバーの IP アドレスまたはドメイン名を入力することで Nginx にアクセスできます。デフォルトでは、Nginx のデフォルトウェブサイトのディレクトリは /usr/local/nginx/html です。

上記は Nginx をコンパイルしてインストールする基本的な例です。特定のニーズに応じて、さらなる設定と調整が必要になる場合があります。

nginx path prefix: "/usr/local/nginx"
nginx binary file: "/usr/local/nginx/sbin/nginx"
nginx modules path: "/usr/local/nginx/modules"
nginx configuration prefix: "/usr/local/nginx/conf"
nginx configuration file: "/usr/local/nginx/conf/nginx.conf"
nginx pid file: "/usr/local/nginx/logs/nginx.pid"
nginx error log file: "/usr/local/nginx/logs/error.log"
nginx http access log file: "/usr/local/nginx/logs/access.log"
nginx http client request body temporary files: "client_body_temp"

How does Jquery monitor the click events of dynamically created elements?

Seatgo — Fri, 10 Apr 2026 09:44:23 +0000

During the process of using Jquery, we may dynamically create elements such as li/button, but we cannot listen to the created elements using the following methods:

var domains = [{"id":1,"name":"测试1"},{"id":2,"name":"测试2"},{"id":3,"name":"测试3"}];
$.each(domains,function(key,domain){
$("#link_child").append('<li id="'+domain.id+'">'+domain.name+'</li>');
});
$("#link_child li").click(function(){
var linkChild = $(this).attr("id");
$("#link_child li").removeClass("active");
$(this).addClass("active");
});

We can use a new method to monitor clicks:

$(document).on('click','#link_child li',function(){
var id = $(this).attr("id");
$("#link_child li").removeClass("active");
$(this).addClass("active");
});