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Our team brings years of experience in the digital payments industry to provide reliable services.
<?php
namespace Illuminate\Queue;
class LuaScripts
{
/**
* Get the Lua script for computing the size of queue.
*
* KEYS[1] - The name of the primary queue
* KEYS[2] - The name of the "delayed" queue
* KEYS[3] - The name of the "reserved" queue
*
* @return string
*/
public static function size()
{
return <<<'LUA'
return redis.call('llen', KEYS[1]) + redis.call('zcard', KEYS[2]) + redis.call('zcard', KEYS[3])
LUA;
}
/**
* Get the Lua script for pushing jobs onto the queue.
*
* KEYS[1] - The queue to push the job onto, for example: queues:foo
* KEYS[2] - The notification list for the queue we are pushing jobs onto, for example: queues:foo:notify
* ARGV[1] - The job payload
*
* @return string
*/
public static function push()
{
return <<<'LUA'
-- Push the job onto the queue...
redis.call('rpush', KEYS[1], ARGV[1])
-- Push a notification onto the "notify" queue...
redis.call('rpush', KEYS[2], 1)
LUA;
}
/**
* Get the Lua script for popping the next job off of the queue.
*
* KEYS[1] - The queue to pop jobs from, for example: queues:foo
* KEYS[2] - The queue to place reserved jobs on, for example: queues:foo:reserved
* KEYS[3] - The notify queue
* ARGV[1] - The time at which the reserved job will expire
*
* @return string
*/
public static function pop()
{
return <<<'LUA'
-- Pop the first job off of the queue...
local job = redis.call('lpop', KEYS[1])
local reserved = false
if(job ~= false) then
-- Increment the attempt count and place job on the reserved queue...
reserved = cjson.decode(job)
reserved['attempts'] = reserved['attempts'] + 1
reserved = cjson.encode(reserved)
redis.call('zadd', KEYS[2], ARGV[1], reserved)
redis.call('lpop', KEYS[3])
end
return {job, reserved}
LUA;
}
/**
* Get the Lua script for releasing reserved jobs.
*
* KEYS[1] - The "delayed" queue we release jobs onto, for example: queues:foo:delayed
* KEYS[2] - The queue the jobs are currently on, for example: queues:foo:reserved
* ARGV[1] - The raw payload of the job to add to the "delayed" queue
* ARGV[2] - The UNIX timestamp at which the job should become available
*
* @return string
*/
public static function release()
{
return <<<'LUA'
-- Remove the job from the current queue...
redis.call('zrem', KEYS[2], ARGV[1])
-- Add the job onto the "delayed" queue...
redis.call('zadd', KEYS[1], ARGV[2], ARGV[1])
return true
LUA;
}
/**
* Get the Lua script to migrate expired jobs back onto the queue.
*
* KEYS[1] - The queue we are removing jobs from, for example: queues:foo:reserved
* KEYS[2] - The queue we are moving jobs to, for example: queues:foo
* KEYS[3] - The notification list for the queue we are moving jobs to, for example queues:foo:notify
* ARGV[1] - The current UNIX timestamp
*
* @return string
*/
public static function migrateExpiredJobs()
{
return <<<'LUA'
-- Get all of the jobs with an expired "score"...
local val = redis.call('zrangebyscore', KEYS[1], '-inf', ARGV[1], 'limit', 0, ARGV[2])
-- If we have values in the array, we will remove them from the first queue
-- and add them onto the destination queue in chunks of 100, which moves
-- all of the appropriate jobs onto the destination queue very safely.
if(next(val) ~= nil) then
redis.call('zremrangebyrank', KEYS[1], 0, #val - 1)
for i = 1, #val, 100 do
redis.call('rpush', KEYS[2], unpack(val, i, math.min(i+99, #val)))
-- Push a notification for every job that was migrated...
for j = i, math.min(i+99, #val) do
redis.call('rpush', KEYS[3], 1)
end
end
end
return val
LUA;
}
/**
* Get the Lua script for removing all jobs from the queue.
*
* KEYS[1] - The name of the primary queue
* KEYS[2] - The name of the "delayed" queue
* KEYS[3] - The name of the "reserved" queue
* KEYS[4] - The name of the "notify" queue
*
* @return string
*/
public static function clear()
{
return <<<'LUA'
local size = redis.call('llen', KEYS[1]) + redis.call('zcard', KEYS[2]) + redis.call('zcard', KEYS[3])
redis.call('del', KEYS[1], KEYS[2], KEYS[3], KEYS[4])
return size
LUA;
}
}
How it Works
Getting started with NFC Pay is simple and quick. Register your account, add your cards, and you're ready to make payments in no time. Whether you're paying at a store, sending money to a friend, or managing your merchant transactions, NFC Pay makes it easy and secure.
Download the NFC Pay app and sign up with your email or phone number. Complete the registration process by verifying your identity, and set up your secure PIN to protect your account.
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To pay, simply tap your phone or scan the QR code at checkout. You can also transfer money to other users with a few taps. Enjoy fast, contactless payments with top-notch security.
Security System
NFC Pay prioritizes your security with advanced features that safeguard every transaction. From SMS or email verification to end-to-end encryption, we've implemented robust measures to ensure your data is always protected. Our security systems are designed to prevent unauthorized access and provide you with a safe and reliable payment experience.
Receive instant alerts for every transaction to keep track of your account activities.
Verify your identity through our Know Your Customer process to prevent fraud and enhance security.
Dramatically supply transparent backward deliverables before caward comp internal or "organic" sources.
All your data and transactions are encrypted, ensuring that your sensitive information remains private.
Monitor unusual activity patterns to detect and prevent suspicious behavior in real-time.
Why Choice Us
With NFC Pay, you get a trusted platform backed by proven expertise and a commitment to quality. We put our customers first, offering innovative solutions tailored to your needs, ensuring every transaction is secure, swift, and seamless.
Our team brings years of experience in the digital payments industry to provide reliable services.
We prioritize excellence, ensuring that every aspect of our platform meets the highest standards.
Your needs drive our solutions, and we are dedicated to delivering a superior user experience.
We continuously evolve, integrating the latest technologies to enhance your payment experience.
Testimonial Section
Hear from our users who trust NFC Pay for their everyday transactions. Our commitment to security, ease of use, and exceptional service shines through in their experiences. See why our clients choose NFC Pay for their payment needs and how it has transformed the way they manage their finances.
App Section
Unlock the full potential of NFC Pay by downloading our app, designed to bring secure, swift, and smart transactions to your fingertips. Whether you're paying at a store, transferring money to friends, or managing your business payments, the NFC Pay app makes it effortless. Available on both iOS and Android, it's your all-in-one solution for convenient and reliable digital payments. Download now and experience the future of payments!