Loma  Baumbach

Loma Baumbach

1596679140

Redis Transactions & Long-Running Lua Scripts

Redis offers two mechanisms for handling transactions – MULTI/EXEC based transactions and Lua scripts evaluation. Redis Lua scripting is the recommended approach and is fairly popular in usage.

Our Redis™ customers who have Lua scripts deployed often report this error – “BUSY Redis is busy running a script. You can only call SCRIPT KILL or SHUTDOWN NOSAVE”. In this post, we will explain the Redis transactional property of scripts, what this error is about, and why we must be extra careful about it on Sentinel-managed systems that can failover.

Redis Lua Scripts Diagram - ScaleGrid Blog

Transactional Nature of Redis Lua Scripts

Redis “transactions” aren’t really transactions as understood conventionally – in case of errors, there is no rollback of writes made by the script.

Atomicity” of Redis scripts is guaranteed in the following manner:

  • Once a script begins executing, all other commands/scripts are blocked until the script completes. So, other clients either see the changes made by the script or they don’t. This is because they can only execute either before the script or after the script.
  • However, Redis doesn’t do rollbacks, so on an error within a script, any changes already made by the script will be retained and future commands/scripts will see those partial changes.
  • Since all other clients are blocked while the script executes, it is critical that the script is well-behaved and finishes in time.

The ‘lua-time-limit’ Value

It is highly recommended that the script complete within a time limit. Redis enforces this in a weak manner with the ‘lua-time-limit’ value. This is the maximum allowed time (in ms) that the script is allowed to run. The default value is 5 seconds. This is a really long time for CPU-bound activity (scripts have limited access and can’t run commands that access the disk).

However, the script is not killed when it executes beyond this time. Redis starts accepting client commands again, but responds to them with a BUSY error.

If you must kill the script at this point, there are two options available:

  • SCRIPT KILL command can be used to stop a script that hasn’t yet done any writes.
  • If the script has already performed writes to the server and must still be killed, use the SHUTDOWN NOSAVE to shutdown the server completely.

It is usually better to just wait for the script to complete its operation. The complete information on methods to kill the script execution and related behavior are available in the documentation.

#cloud #database #developer #high availability #howto #redis #scalegrid #lua-time-limit #redis diagram #redis master #redis scripts #redis sentinel #redis servers #redis transactions #sentinel-managed #server failures

What is GEEK

Buddha Community

Redis Transactions & Long-Running Lua Scripts
Loma  Baumbach

Loma Baumbach

1596679140

Redis Transactions & Long-Running Lua Scripts

Redis offers two mechanisms for handling transactions – MULTI/EXEC based transactions and Lua scripts evaluation. Redis Lua scripting is the recommended approach and is fairly popular in usage.

Our Redis™ customers who have Lua scripts deployed often report this error – “BUSY Redis is busy running a script. You can only call SCRIPT KILL or SHUTDOWN NOSAVE”. In this post, we will explain the Redis transactional property of scripts, what this error is about, and why we must be extra careful about it on Sentinel-managed systems that can failover.

Redis Lua Scripts Diagram - ScaleGrid Blog

Transactional Nature of Redis Lua Scripts

Redis “transactions” aren’t really transactions as understood conventionally – in case of errors, there is no rollback of writes made by the script.

Atomicity” of Redis scripts is guaranteed in the following manner:

  • Once a script begins executing, all other commands/scripts are blocked until the script completes. So, other clients either see the changes made by the script or they don’t. This is because they can only execute either before the script or after the script.
  • However, Redis doesn’t do rollbacks, so on an error within a script, any changes already made by the script will be retained and future commands/scripts will see those partial changes.
  • Since all other clients are blocked while the script executes, it is critical that the script is well-behaved and finishes in time.

The ‘lua-time-limit’ Value

It is highly recommended that the script complete within a time limit. Redis enforces this in a weak manner with the ‘lua-time-limit’ value. This is the maximum allowed time (in ms) that the script is allowed to run. The default value is 5 seconds. This is a really long time for CPU-bound activity (scripts have limited access and can’t run commands that access the disk).

However, the script is not killed when it executes beyond this time. Redis starts accepting client commands again, but responds to them with a BUSY error.

If you must kill the script at this point, there are two options available:

  • SCRIPT KILL command can be used to stop a script that hasn’t yet done any writes.
  • If the script has already performed writes to the server and must still be killed, use the SHUTDOWN NOSAVE to shutdown the server completely.

It is usually better to just wait for the script to complete its operation. The complete information on methods to kill the script execution and related behavior are available in the documentation.

#cloud #database #developer #high availability #howto #redis #scalegrid #lua-time-limit #redis diagram #redis master #redis scripts #redis sentinel #redis servers #redis transactions #sentinel-managed #server failures

Akshara Singh

1622015491

Bitcoin Exchange script | Cryptocurrency Exchange Script | Free Live Demo @ Coinsclone

Hey peeps, Hope you all are safe & going well

Many entrepreneurs & startups are interested to start a crypto exchange platform by using a cryptocurrency exchange script, you know why??? Let me explain. Before that, you need to know what is a cryptocurrency exchange script???

What is Cryptocurrency Exchange Script???

Cryptocurrency Exchange Script is an upgrade version of all exchange platforms, it is also called ready-made script or software. By using the crypto exchange script you can launch your crypto trading platform instantly. It is one of the easiest and fastest ways to start your crypto exchange business. Also, it helps to launch your exchange platform within 7 days.

Benefits of Bitcoin Exchange Script:

  • Customizing options - They will help you to build your cryptocurrency exchange platform based on your business needs.
  • Monitor and Engage - You can easily monitor the work process
  • Beta module - You can test your exchange in the Beta module
  • Cost-effective - The development will be around $8k - $15k (It may be vary based on the requirement)
  • Time-Period - You can launch your exchange within 1 week

Best Trading & Security Features of Bitcoin Exchange Script:

  • Multi-language
  • IEO launchpad,
  • Crypto wallet,
  • Instant buying/selling cryptocurrencies
  • Staking and lending
  • Live trading charts with margin trading API and futures 125x trading
  • Stop limit order and stop-loss orders
  • Limit maker orders
  • Multi-cryptocurrencies Support
  • Referral options
  • Admin panel
  • Perpetual swaps
  • Advanced UI/UX
  • Security Features [HTTPs authentication, Biometric authentication, Jail login, Data encryption, Two-factor authentication, SQL injection prevention, Anti Denial of Service(DoS), Cross-Site Request Forgery(CSRF) protection, Server-Side Request Forgery(SSRF) protection, Escrow services, Anti Distributed Denial of Service]

The More Important one is “Where to get the best bitcoin exchange script?”

Where to get the best bitcoin exchange script?

No one couldn’t answer the question directly because a lot of software/script providers are available in the crypto market. Among them, finding the best script provider is not an easy task. You don’t worry about that. I will help you. I did some technical inspection to find the best bitcoin exchange script provider in the techie world. Speaking of which, one software provider, Coinsclone got my attention. They have successfully delivered 100+ secured bitcoin exchanges, wallets & payment gateways to their global clients. No doubt that their exchange software is 100% bug-free and it is tightly secured. They consider customer satisfaction as their priority and they are always ready to customize your exchange based on your desired business needs.

Of course, it kindles your business interest; but before leaping, you can check their free live demo at Bitcoin Exchange Script.

Are you interested in business with them, then connect their business experts directly via

Whatsapp/Telegram: +919500575285

Mail: hello@coinsclone.com

Skype: live:hello_20214

#bitcoin exchange script #cryptocurrency exchange script #crypto exchange script #bitcoin exchange script #bitcoin exchange clone script #crypto exchange clone script

Jennifer Letty

Jennifer Letty

1617602685

HYIP Investment Script: Twisted It with Crowdfunding & Lending Platform - Benefits Of It!

Are you wanting to be an Entrepreneur? A Business using cryptocurrency? Then this article is for you.

As a beginner, always one prefers fair play. But to the least, initiating business in the streams of cryptocurrency carries a varying degree of risks. We all know that, Every business packs the profit only if we are ready to take risks. But flabbergast is, you can avoid unnecessary risk, If you choose our Twisted HYIP Investment script. You don’t need to play poker with your hard-earned Money.

Using minimal investment, You can start a beneficial business.

Craze for cryptocurrency is now seeming to be unlimited, Using the Twisted HYIP platform you will get funds for running the lending business- this is the one line of the process.

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First, let me make plain, How our traditional HYIP works?

You can create a number of investment plans with attractive and promising Rate of interest. Investors will invest in those plans and get their interest periodically.

How you will provide them interest? You have to collect the investments and use them for your own project, Trading, Stock marketing and so on.

What if you don’t find a right platform to grow your investor’s funds. You will lack in processing their interest, and it will be filthy, right?

How it works?

So this Twisted HYIP platform clear this shady cloud and brings you the best place to grow your investors’ funds. With our platform you can run Investment as well as lending platform together. You will run a traditional HYIP script for your investors stating the fixed Rate of interest with validity for processing their principle back.

Instead of using the crowded funds in different platform, You can use it for lending to borrowers in your platform at an interest rate higher than promised to your investors. Now you can pay back the investors as well as you will get a constant flow of income for you.

This is image title

Instead of generating promised interest rate daily or monthly, You can also make it as a doubler with long term duration. So you can use the investors fund as well as lenders repay again and again.

Every investor can monitor their investment growth in their dashboard. They will get back their invested amount plus additional ROI only when their investment gets matures. But they can see, how their wallet is loaded with profits without any risk.

Possibility of being a Profitable business

  1. Cryptocurrencies are now obligatory assets. We can predict it as future currency, which sweep away the paper currency. An anxiousness to earn more Cryptocurrency with minimal investment, attracts more people.
  2. Everyone will have a dream to achieve. They will be loaded with talents, but lack of funds. You can be a lender with handsome interest.
  3. Not only for Cryptos, You can use the same script for fiats and live ERC20 tokens. So there are many doors to knock. If one shuts you kick the other.
  4. You can use a single script as Stacking for Erc20, HYIP with promised returns, lending with an affordable rate of interest and also as a Doubler.

Crucial bits of Twisted HYIP

  • Easy to Navigate and Highly informative Admin dashboard
  • Continuous growth monitors with a wide range of opportunities in Investor Dashboard
  • Affordable deals with more information loaded Borrower Dashboard
  • Third party integrated AML/KYC Security segments
  • Multiple cryptocurrency supportable payment methods
  • Useful Affiliate system and level bonuses.
  • Highly customizable
  • Perform multiple script

Cryptocurrency market is blooming one, as per the voices of many financial expertise, prediction for end of digital currency is a blue moon. This twisted HYIP will create its own market as a perception for profit is getting increased every day among the people.

Now are you ready to launch your own lending platform? then Connect with KIR HYIP to know more interesting features about the platform. There is always space to add your ideas.

Under a short span of time, launch your own turnkey based lending platform. The World is running behind Profit, what are you waiting for? Join the club now and get the free HYIP software demo!

#hyip script #hyip investment script #bitcoin hyip script #buy hyip script #best hyip script #hyip investment script

Jennifer Letty

Jennifer Letty

1619152955

HYIP Script & ICO Script - Where to Buy It?

HYIP projects are one of the growth trends of the internet and many investors are involved in it.

One of the quickest ways to get rich today is because so many people want to join this network.

Hyip concept is often referred to as a high-yield investment plan or scheme, while the main difference between this and other types of investments is high-yield and low-yield.
There are many HYIPs with different investment plans. Those are, Short and long term.

Start your own investment site by hand with the best HYIP script.

Explore every part of our software packaged with responsive design, multiple projects, and multiple currency support features. They provide quality products associated with efficient product endeavors that make our product shine in every aspect.

Sign in to the HYIP script demo now for free and explore its features and installation process.

Initial Coin Offering Projects:

In Today’s trend, ICO script also created a vast impact on collecting funds and gaining benefits valuable operations. The cost for building an ICO website is made easy as it is based on customers’ specifications of features.

Look into the constructive features as it holds the top graded properties and it supplies essential tokens needed for crowdfunding campaigns. The best software provider KIR HYIP presents a prodigious product.

The ICO Script is coordinated with corresponding lending and affiliate programs that actually work in a format of allowing investors to purchase tokens during a crowd sale and then provides right to get a guaranteed interest return in accordance with the amount of tokens purchased over a period of time.

The product is furnished with more attractive and essential features that support

  • Multiple payment methods
  • Fund transfer facility
  • Referral programs
  • Multiple currency
  • Google analytics
  • Promotional tools
  • Favicon
  • QR codes

Also, the script supports various cryptocurrencies in order to collect funds in an effective method. It is a combination for making investment and donation. The uncertainty over secure transactions is cleared out with strong security mechanism.

In comparison with the features the software comes up with the quality assured price. Check the demo here: ICO Script Demo

#hyip script #hyip software #bitcoin hyip script #buy hyip script #best hyip script #ico script

Akshara Singh

1613728728

Which is the best cryptocurrency exchange script?

Are you interested in starting a cryptocurrency exchange??? Congrats, you’ve chosen the right business idea at the right time!!! Because cryptocurrency is gonna boom in the upcoming days. Recently, many governments are legalizing cryptocurrency in their countries. And more importantly, the pride of cryptocurrencies “Bitcoin crossed more than $50K”. So this is the right time to originate your crypto exchange business. Now you will have a question like this “How to start a bitcoin exchange in a safe & secure way?” For your unanswered question. I suggest a simple solution, that is “Bitcoin Exchange Clone Script”. But there are lots of crypto exchange clone scripts in the crypto market. Here I listed the Top 10 Cryptocurrency Exchange Scripts check it out below.

Top 10 Cryptocurrency Exchange Scripts:

  1. Binance clone script
  2. LocalBitcoins clone script
  3. Coinbase clone script
  4. Paxful clone script
  5. Remitano clone script
  6. Bitstamp clone script
  7. Bithumb clone script
  8. Wazirx clone script
  9. Poloniex clone script
  10. Kucoin clone script

Among these clone scripts many cryptopreneurs & enthusiasts most commonly use only 3 cryptocurrency exchange scripts.

These are 3 cryptocurrency exchange clone scripts that are widely used in the crypto space. “Who Provides these cryptocurrency exchange scripts???” That’s really hard to find because many crypto exchange clone script firms are available in the crypto market. So, finding the best one will be a kind of complicated task. Don’t worry; I will help you. I’ve done some technical aspects to identify & find the best crypto exchange clone script provider, as the end of the result one script/software provider (Coinsclone) cleared all my technical & non-technical hurdles. Coinsclone is one of the professional crypto exchange clone script providers. Their software/script is 100% secured & bug-free because their primary motto is client stratification. So that they have clients from all over the world. Till now they have successfully delivered 100+ crypto projects (Crypto exchange, Wallets & Payment gateway) for their clients.

If you are interested, you can check their free live demo @ Bitcoin Exchange Script demo.

Or else, you want to speak with their business experts directly. You can touch their experts via,

Whatsapp / Telegram @ +919500575285

Mail: hello@coinsclone.com

Skype: live:hello_20214

#bitcoin exchange script #coinbase clone script #localbitcoins clone script #binance clone script #bitcoin exchange clone script #crypto exchange clone script