Microservices
Microservices Architecture
A design pattern where an application is composed of small, independently deployable services communicating via APIs.
Technisches Detail
Microservices engines use two fundamental approaches: NFA (Nondeterministic Finite Automaton) used by Python, JavaScript, and Java — which supports backtracking and lookaheads but can exhibit catastrophic backtracking on pathological patterns — and DFA (Deterministic Finite Automaton) used by grep and RE2, which guarantees linear-time matching but doesn't support backreferences. The PCRE (Perl Compatible Regular Expressions) library is the most widely used NFA implementation across programming languages.
Beispiel
```javascript
// Email validation pattern
const emailRegex = /^[\w.-]+@[\w-]+\.[a-zA-Z]{2,}$/;
emailRegex.test('[email protected]'); // true
// Extract groups
const datePattern = /(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})/;
const match = '2026-03-08'.match(datePattern);
console.log(match.groups.year); // '2026'
```
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