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docs/de/api-binary.md

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+# Binärprotokoll API
+
+Niedrigstufiges Wire-Protokoll für hochperformante Client-Verbindungen.
+
+## Nachrichtenformat
+
+Alle Nachrichten verwenden Big-Endian-Byte-Reihenfolge:
+
+```
+┌────────┬────────┬────────┬────────┬─────────────┐
+│ Length │  Type  │  Seq   │ Status │   Payload   │
+│ 4 bytes│ 1 byte │ 2 bytes│ 1 byte │  N bytes    │
+└────────┴────────┴────────┴────────┴─────────────┘
+```
+
+## Nachrichtentypen
+
+### Query (0x01)
+
+```nim
+let msg = makeQueryMessage(seq, "SELECT * FROM users")
+```
+
+### Insert (0x02)
+
+```nim
+let msg = makeInsertMessage(seq, "users", data)
+```
+
+### Update (0x03)
+
+```nim
+let msg = makeUpdateMessage(seq, "users", updates, where)
+```
+
+### Delete (0x04)
+
+```nim
+let msg = makeDeleteMessage(seq, "users", where)
+```
+
+### Ready (0x05)
+
+```nim
+let msg = makeReadyMessage(seq)
+```
+
+### Error (0x06)
+
+```nim
+let msg = makeErrorMessage(seq, code, message)
+```
+
+## Antwortcodes
+
+| Code | Name | Beschreibung |
+|------|------|-------------|
+| 0x00 | OK | Erfolg |
+| 0x01 | ERROR | Allgemeiner Fehler |
+| 0x02 | AUTH_REQUIRED | Authentifizierung erforderlich |
+| 0x03 | INVALID_QUERY | Abfragesyntaxfehler |
+| 0x04 | NOT_FOUND | Ressource nicht gefunden |
+
+## Serialisierung
+
+```nim
+import barabadb/protocol/wire
+
+# Wert serialisieren
+let bytes = serializeValue(Value(kind: vkString, strVal: "test"))
+
+# Wert deserialisieren
+let value = deserializeValue(bytes)
+```