Coding Life

A journey of a thousand miles begins with a single step

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All You Need Is Chasing Momentum

In many people’s minds, “chasing highs and cutting losses” carries a negative connotation—irrational, emotional, and destined to be exploited by the market. But if you look at it from another angle, it is actually a very simple, almost fundamental principle:

Follow the trend.

Once you strip “chasing highs and cutting losses” away from short-term speculation, it becomes a powerful lens for understanding how success works in the real world.

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In today’s cloud-dominated development landscape, many teams rely heavily on integrated platforms like Supabase, AWS, and Vercel to accelerate deployment. While convenient, this approach introduces risks such as vendor lock-in, reduced control over data, and long-term cost unpredictability.

For systems like OPC—where stability, security, and full ownership are critical—it is both practical and strategic to build a fully self-controlled technology stack, minimizing dependency on third-party cloud providers.

1. Core Principle: Control Over Convenience

The foundation of this architecture is simple:

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How APY is Calculated for Grid Orders on Gridtrade

Gridtrade uses a grid trading mechanism to generate yield by systematically buying low and selling high within a predefined price range. The APY (Annual Percentage Yield) of a grid order reflects the compounded return generated from grid execution, trading fees, and price dynamics over time.

1. Price Impact on APY

Price movement is the primary driver of grid trading profitability.

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Why So Many European Tech Websites Still Feel Stuck in 2005

Recently I tried to register for several European VPS providers. What should have been a simple five-minute task somehow turned into a frustrating hour of page reloads, mysterious errors, and endless loading spinners. It made me wonder: why do so many European tech websites still feel like they are built for the internet of 2005?

This isn’t about a single company. After trying multiple providers across different countries, I kept running into the same problems again and again.

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Introducing Simple7702Account and Universal7702Account: EIP-7702 Smart Account Implementations

The Ethereum ecosystem is evolving rapidly, and EIP-7702 represents one of the most significant upgrades to account abstraction. In this post, we’ll explore two production-ready implementations: Simple7702Account and Universal7702Account, designed to bring smart contract functionality to Externally Owned Accounts (EOAs).

Why This Project?

In typical scenarios—such as facilitating simple transfers for custodial wallet users—the existing ERC-4337 paymaster solutions present significant challenges:

  • Overly Complex: ERC-4337 requires a full bundler infrastructure, entry point contracts, and complex paymaster logic
  • Third-Party Dependencies: Many solutions rely on external services like Pimlico, Alchemy, or other infrastructure providers
  • High Integration Cost: Setting up and maintaining the entire 4337 stack is resource-intensive

For many use cases, you don’t need the full power of ERC-4337. What you need is a simple, direct way to sponsor transactions for your users.

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What is JWT

JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed. JWTs can be signed using a secret (with the HMAC algorithm) or a public/private key pair using RSA or ECDSA.

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Since the COVID-19 outbreak in 2019, we have seen all kinds of de-globalization trends and new restrictions. After the war in Ukraine, people also began to question the ongoing de-globalization of finance. Can the US dollar still be trusted? Can the financial institutions of neutral countries still be trusted? Behind all of these trust crises is a deeper signal: decentralized assets such as BTC and ETH point toward a better long-term direction for humanity.

We are standing at the crossroads of a major transformation.

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The AAVE v3 codebase had already been audited and was close to release when this post was written. This version focused mainly on several themes:

  • capital efficiency
  • risk-control strategy
  • decentralization
  • cross-chain support

The AAVE v3 contracts are open source:

https://github.com/aave/aave-v3-core

Let’s look at the major improvements this release introduced.

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Redis transactions can be implemented in two ways: with MULTI, or with Lua scripts. Lua scripts are simpler, require fewer client-server interactions, and can be cached by Redis, which makes them especially useful in performance-sensitive scenarios.