????? ???? Amazon?? ? ?? ??? ??? ????. Medium?? ?? ????? ??? ???? ?? ?? ???. ?????! ??? ??? ??? ?????!

???? ??? ?? Java ????? ?? ?????? ?? ???? ???? ???? ?????. ??? ??? ? ?? ???? ??? ????. ?? ??????? ??, ?? ? ??? ?? ???? ???? ????. ? ????? Java ??????? ?????? ????? ??? ?? ???? 5?? ??? ??? ?? ???? ???????.

??????: ??? ??? ?? ?

??????? ?? ?????? ??? ?? ? ???? ??? ?????. ???? ??? ?? ??? ?? ??? ???? ??? ??? ???? ??? ?? ??? ? ????. Prometheus, Graphite, InfluxDB ? ??? ???? Micrometer? ??????.

?? Micrometer?? ?? ???? ?? ?? ?? ?????. ?? ?? ????? ??? ???? ???? ??? ? ?? ??? ????? ??? ? ????. ??? ??????? ???? ???? ???? ??? ?? ??? ????.

Counter counter = Metrics.counter("api.requests", "endpoint", "/users");
counter.increment();

? ??? ?????? ???? ??? ???? API ??? ?? ???? ?????. HTTP ???? ??? ??? ?? ?? ????? ???? ?? ? ?? ??? ?? ??? ? ????.

??????? ???, ???, ?? ??? ?? ?? ???? ??? ?????. ?? ??? ?? ??? ???? ?? ???? ?? ?????.

Timer timer = Metrics.timer("method.execution", "class", "UserService", "method", "createUser");
timer.record(() -> userService.createUser(user));

createUser ???? ?? ??? ???? ?? ??? ? ??? ??? ? ??? ??? ??? ?????.

??? ?? ?????: ?? ?? ????

?? Spring Boot ???????? Spring Boot Actuator? ?????. ???? ???? ??? ? ?? ??? ???? ?? ??? ?????.

?? ?? ???? Actuator ????? ? ??? ?? ????????. ? ?????? ??? ?? ??? ??? ?????.

@Component
public class DatabaseHealthIndicator implements HealthIndicator {
    @Override
    public Health health() {
        if (isDatabaseHealthy()) {
            return Health.up().withDetail("database", "Operational").build();
        }
        return Health.down().withDetail("database", "Not responding").build();
    }
}

? ??? ?? ?? ???? ?????? ??? ???? /actuator/health ?????? ?? ?? ?????.

?????? ??? ?????? ? ?? ?????. JVM ???? ??? ?? ???? ?????? ???? ????? ?????. ?? ??????? ?? ?? ?????:

@RestController
public class UserController {
    private final Counter userCreationCounter;

    public UserController(MeterRegistry registry) {
        this.userCreationCounter = registry.counter("users.created");
    }

    @PostMapping("/users")
    public User createUser(@RequestBody User user) {
        // User creation logic
        userCreationCounter.increment();
        return user;
    }
}

? ??? ???? ??? ??? ???? ?????, ?? ?? /actuator/metrics ?????? ?? ????? ? ????.

OpenTelemetry: ?? ???? ??

OpenTelemetry? ???????? ?? ???? ???? ??? ??? ??????. ??, ?? ? ??? ?? ?? API? ???? ??? ???? ??? ?? ?? ??? ??? ???? ? ????.

Java ???????? ????? OpenTelemetry? ???? ??? ??? ????.

Counter counter = Metrics.counter("api.requests", "endpoint", "/users");
counter.increment();

? ??? ?? ??? ???? ? ??? ? ?? ?? ????? ??? ?????. OpenTelemetry? ??? ??? ??? ???? ???? ????? ? ???? Jaeger, Zipkin ?? ?? ?? ??? ????? ?? ? ??? ????.

Elastic APM: ?????? ??? ?? ?? ???

Elastic APM? Java ??????? ?? ??? ???? ???? ?? ???? ??? ??????. ??? ?? ?????? ??? ???? ??? ???? ??? ??? ?? ??? ???? ???? ? ??? ?????.

Elastic APM? Spring Boot ??????? ???? ?? ?????.

Timer timer = Metrics.timer("method.execution", "class", "UserService", "method", "createUser");
timer.record(() -> userService.createUser(user));

? ??? ? ??? ?? ??? ?? ????? ???? Elastic APM?? ?? ??? ??? ? ?? ????.

?? ?? ?? ???? Elastic APM? ?? ? ??? JDBC ??? ?? ?????. ???? ?? ?? ?? ?????? ??? ???? ? ??? ?????.

Jaeger: ???????? ?? ?? ??

??????? ???? ???? Jaeger? ?? ??? ??? ????. ?? ?? ??? ?? ?? ???? ?? ??? ?? ??? ??? ? ?????.

Spring Boot ???????? Jaeger? ????? ???? ??? ??? ????.

@Component
public class DatabaseHealthIndicator implements HealthIndicator {
    @Override
    public Health health() {
        if (isDatabaseHealthy()) {
            return Health.up().withDetail("database", "Operational").build();
        }
        return Health.down().withDetail("database", "Not responding").build();
    }
}

? ??? getUser ???? ?? ??? ???? ?? Jaeger? UI?? ???? ? ????. ? ???? ?? ???? ???? Jaeger? ???? ??? ???? ?? ??? ?? ?? ??? ?????.

?? ? ??? ???? ???? Jaeger? ??? ?? ???? ?? ?? ??? ???? ? ?? ??????.

?? ???

? ??? ??? ?? ???? ?? ??? ?? ??? ???? ????. ?? ?? ?? ???? Micrometer? ????, ?? ?? ? ?? ??? Spring Boot Actuator?, ??? ??? ???? ??? ?? OpenTelemetry?, ???? ?? ???? ?? Elastic APM?, ?? ??? ?? Jaeger? ?????.

??? Spring Boot ???????? ??? ??? ???? ??? ?? ????.

@RestController
public class UserController {
    private final Counter userCreationCounter;

    public UserController(MeterRegistry registry) {
        this.userCreationCounter = registry.counter("users.created");
    }

    @PostMapping("/users")
    public User createUser(@RequestBody User user) {
        // User creation logic
        userCreationCounter.increment();
        return user;
    }
}

? ????? ??? ?????.

• Spring Boot Actuator(Spring Boot??? ????? ????)
• ??? ???? ?? ??????(@Timed ??? ??)
• ?? ??? ?? Jaeger(???? ?)
• ??? ?? ??? ?? Elastic APM(??? ?)

? ??? ?? ? ??????? ??? ??? ????? ? ? ????.

??

???? ?? Java ???? ??? ????. ??? ?????. ??? ??? ??? Micrometer, Spring Boot Actuator, OpenTelemetry, Elastic APM, Jaeger? ? ?? ??? ???? ??? ?????.

? ??? ??? ??? ?????. Micrometer? ??? ?? ??? ????, Spring Boot Actuator? ????? ?? ?? ??? ??? ????, OpenTelemetry? ??? ??? ?? ?? ???? ?????, Elastic APM? ???? ?? ???? ????, Jaeger? ?? ??? ?????.

??? ??? ????? ?????? ?? ?? ???? ??? ???? ?? ??? ??? Java ??????? ??? ? ?????. ???? ??? ????, ??? ??? ??? ????, ??? ? ??? ?? ??? ?? ??? ?? ? ????.

?? ???? ??? ??? ???? ???? ?? ??? ?? ??? ???? ?? ??? ?????. ??? ?????? ??? ??? ??? ? ??????? ?? ? ???? ??? ?? ??? ?? ???? ? ??? ?????.

???? ??? ??? ??? ??? ????? ????? ???? ???? ????. ???? ??, ?? ???, ???? ?? ??? ?? ??? ??? ???. ??? ??(??? ??? ???)? ??? ??????? ??? ???? ??? ????.

---

101?

101 Books? ?? Aarav Joshi? ?? ??? AI ?? ??????. ?? AI ??? ???? ?? ??? ?? ? ?? ??? ?? ?????. ?? ??? ??? $4?? ???? ?? ??? ??? ??? ??? ? ????.

????? ?? ? ?? Golang Clean Code ?? ??? ???.

????? ???? ??? ?? ??? ??? ????. ?? ??? ? Aarav Joshi? ??? ? ?? ?? ?????. ??? ??? ???? ????? ?????!

??? ???

?? ???? ? ??? ???.

???? ??? | ??? ?? ???? | ?? ?? ??? | ????? | ??? ??? | ????? ???? | ???? | ??? ??? | JS ??

---

??? ??? ????

?? ??? ???? | Epochs & Echoes World | ??????? | ???? ???? ?? | ??? ??? ?? | ?? ????

? ??? ?? Java ?? ??: ?????? ?? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!