testEncodingWithCasing(base32(), "", "");
    testEncodingWithCasing(base32(), "f", "MY======");
    testEncodingWithCasing(base32(), "fo", "MZXQ====");
    testEncodingWithCasing(base32(), "foo", "MZXW6===");
    testEncodingWithCasing(base32(), "foob", "MZXW6YQ=");
    testEncodingWithCasing(base32(), "fooba", "MZXW6YTB");
    testEncodingWithCasing(base32(), "foobar", "MZXW6YTBOI======");
  }

Voici un petit bout de cette histoire.

## Alternatives

Je crée des API avec des exigences complexes depuis plusieurs années (Machine Learning, systèmes distribués, jobs asynchrones, bases de données NoSQL, etc), en dirigeant plusieurs équipes de développeurs.

Dans ce cadre, j'ai dû étudier, tester et utiliser de nombreuses alternatives.

     */
    @Resource
    protected HttpServletRequest request;

    /**
     * Returns an empty OptionalThing for login manager since API actions
     * use token-based authentication instead of traditional session-based login.
     *
     * @return empty OptionalThing indicating no login manager is used
     */
    @Override
    protected OptionalThing<LoginManager> myLoginManager() {

            return new HtmlNext(basePath + page.getRoutingPath());
        }, page);
    }

    /**
     * Gets the base path for virtual host based on the virtual host key and page.
     *
     * @param s The virtual host key
     * @param page The HTML page
     * @return The base path for the virtual host
     */
    protected String getVirtualHostBasePath(final String s, final HtmlNext page) {

    return BASE64_URL;
  }

  private static final BaseEncoding BASE32 =
      new StandardBaseEncoding("base32()", "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567", '=');

  /**
   * The "base32" encoding specified by <a href="http://tools.ietf.org/html/rfc4648#section-6">RFC
   * 4648 section 6</a>, Base 32 Encoding. (This is the same as the base 32 encoding from <a
   * href="http://tools.ietf.org/html/rfc3548#section-5">RFC 3548</a>.)

    /**
     * Creates a path matcher for filtering files based on include and exclude patterns.
     * <p>
     * The pathnames used for matching will be relative to the specified base directory
     * and use {@code '/'} as separator, regardless of the hosting operating system.
     *
     * @param baseDirectory the base directory for relativizing paths during matching

        return className.replace('.', '/') + ".class";
    }

    /**
     * Returns the base directory above the root package from a URL representing a file.
     *
     * @param url
     *            The URL representing the file.
     * @param baseName
     *            The base name.
     * @return The base directory above the root package.
     */

    private boolean testWitness(long base, long n) {
      int r = Long.numberOfTrailingZeros(n - 1);
      long d = (n - 1) >> r;
      base %= n;
      if (base == 0) {
        return true;
      }
      // Calculate a := base^d mod n.
      long a = powMod(base, d, n);
      // n passes this test if
      //    base^d = 1 (mod n)

# Probando una Base de Datos { #testing-a-database }

Puedes estudiar sobre bases de datos, SQL y SQLModel en la <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">documentación de SQLModel</a>. 🤓

Hay un mini <a href="https://sqlmodel.tiangolo.com/tutorial/fastapi/" class="external-link" target="_blank">tutorial sobre el uso de SQLModel con FastAPI</a>. ✨

# Bases de Datos SQL (Relacionales) { #sql-relational-databases }

**FastAPI** no requiere que uses una base de datos SQL (relacional). Pero puedes utilizar **cualquier base de datos** que desees.

Aquí veremos un ejemplo usando <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">SQLModel</a>.