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If this never completes: start PostgreSQL, check DATABASE_URL and DIRECT_URL in .env, run npx prisma db push. Optional: set SKIP_RUNTIME_CATALOG_SEED=1 to skip heavy catalog seed while debugging.
1 API Foundations and HTTPBEGINNER Request/response basics, routes, methods, and status codes.
2 Node and Express StarterBEGINNER Build first endpoints with clean project structure.
31 Security Drill for admin operations backend #4
3 Validation and Error HandlingBEGINNER Validate input and return consistent API errors.
55 Endpoint Design Lab for admin operations backend #156 Reliability Sprint: stabilize async processing #257 Validation and Contract Checkpoint #358 Security Drill for booking reservation API #459 API Operations Playbook #560 Endpoint Design Lab for payments status gateway #661 Reliability Sprint: enforce strict input validation #7
4 Authentication and Access ControlINTERMEDIATE JWT, role checks, permissions, and protected routes.
81 Endpoint Design Lab for e-commerce checkout backend #182 Reliability Sprint: improve endpoint reliability #283 Validation and Contract Checkpoint #384 Security Drill for payments status gateway #485 API Operations Playbook #586 Endpoint Design Lab for notifications orchestration API #687 Reliability Sprint: increase test confidence #7
5 Database and PrismaINTERMEDIATE Schema design, relations, and safe query patterns.
108 Endpoint Design Lab for payments status gateway #1109 Reliability Sprint: protect sensitive operations #2110 Validation and Contract Checkpoint #3111 Security Drill for admin operations backend #4112 API Operations Playbook #5113 Endpoint Design Lab for e-commerce checkout backend #6114 Reliability Sprint: reduce API latency #7
6 Testing and API QualityINTERMEDIATE Integration tests, contract checks, and reliability patterns.
135 Endpoint Design Lab for admin operations backend #1136 Reliability Sprint: stabilize async processing #2137 Validation and Contract Checkpoint #3138 Security Drill for booking reservation API #4139 API Operations Playbook #5140 Endpoint Design Lab for payments status gateway #6141 Reliability Sprint: enforce strict input validation #7
7 Scalability and PerformanceADVANCED Caching, pagination, queues, and throughput optimization.
161 Endpoint Design Lab for e-commerce checkout backend #1162 Reliability Sprint: improve endpoint reliability #2163 Validation and Contract Checkpoint #3164 Security Drill for payments status gateway #4165 API Operations Playbook #5166 Endpoint Design Lab for notifications orchestration API #6167 Reliability Sprint: increase test confidence #7
8 Observability and OperationsADVANCED Structured logs, tracing, metrics, and incident diagnostics.
188 Endpoint Design Lab for payments status gateway #1189 Reliability Sprint: protect sensitive operations #2190 Validation and Contract Checkpoint #3191 Security Drill for admin operations backend #4192 API Operations Playbook #5193 Endpoint Design Lab for e-commerce checkout backend #6194 Reliability Sprint: reduce API latency #7
9 Integrations and MessagingADVANCED Webhooks, async jobs, retry strategies, and idempotency.
215 Endpoint Design Lab for admin operations backend #1216 Reliability Sprint: stabilize async processing #2217 Validation and Contract Checkpoint #3218 Security Drill for booking reservation API #4219 API Operations Playbook #5220 Endpoint Design Lab for payments status gateway #6221 Reliability Sprint: enforce strict input validation #7
10 System Architecture and GovernancePROFESSIONAL Boundaries, API lifecycle, versioning, and governance.
241 Endpoint Design Lab for e-commerce checkout backend #1242 Reliability Sprint: improve endpoint reliability #2243 Validation and Contract Checkpoint #3244 Security Drill for payments status gateway #4245 API Operations Playbook #5246 Endpoint Design Lab for notifications orchestration API #6247 Reliability Sprint: increase test confidence #7
11 Security HardeningPROFESSIONAL Defense-in-depth for APIs, secrets, and abuse prevention.
268 Endpoint Design Lab for payments status gateway #1269 Reliability Sprint: protect sensitive operations #2270 Validation and Contract Checkpoint #3271 Security Drill for admin operations backend #4272 API Operations Playbook #5273 Endpoint Design Lab for e-commerce checkout backend #6274 Reliability Sprint: reduce API latency #7
12 Platform DeliveryPROFESSIONAL CI/CD, deployment safety, rollbacks, and SLO practices.
295 Endpoint Design Lab for admin operations backend #1296 Reliability Sprint: stabilize async processing #2297 Validation and Contract Checkpoint #3298 Security Drill for booking reservation API #4299 API Operations Playbook #5300 Endpoint Design Lab for payments status gateway #6301 Reliability Sprint: enforce strict input validation #7First 30 lessons are free. Subscribe to unlock all 320 Backend API Mastery lessons.
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33 Endpoint Design Lab for e-commerce checkout backend #6
34 Reliability Sprint: reduce API latency #7
35 Validation and Contract Checkpoint #8
36 Security Drill for payments status gateway #9
37 API Operations Playbook #10
38 Endpoint Design Lab for notifications orchestration API #11
39 Reliability Sprint: stabilize async processing #12
40 Validation and Contract Checkpoint #13
41 Security Drill for e-commerce checkout backend #14
42 API Operations Playbook #15
43 Endpoint Design Lab for inventory synchronization service #16
44 Reliability Sprint: enforce strict input validation #17
45 Validation and Contract Checkpoint #18
46 Security Drill for notifications orchestration API #19
47 API Operations Playbook #20
48 Endpoint Design Lab for analytics ingestion service #21
49 Reliability Sprint: harden production security posture #22
50 Validation and Contract Checkpoint #23
51 Security Drill for inventory synchronization service #24
52 API Operations Playbook #25
53 Endpoint Design Lab for customer profile service #26
54 Reliability Sprint: improve observability coverage #27
62 Validation and Contract Checkpoint #8
63 Security Drill for admin operations backend #9
64 API Operations Playbook #10
65 Endpoint Design Lab for e-commerce checkout backend #11
66 Reliability Sprint: harden production security posture #12
67 Validation and Contract Checkpoint #13
68 Security Drill for payments status gateway #14
69 API Operations Playbook #15
70 Endpoint Design Lab for notifications orchestration API #16
71 Reliability Sprint: improve observability coverage #17
72 Validation and Contract Checkpoint #18
73 Security Drill for e-commerce checkout backend #19
74 API Operations Playbook #20
75 Endpoint Design Lab for inventory synchronization service #21
76 Reliability Sprint: improve endpoint reliability #22
77 Validation and Contract Checkpoint #23
78 Security Drill for notifications orchestration API #24
79 API Operations Playbook #25
80 Endpoint Design Lab for analytics ingestion service #26
88 Validation and Contract Checkpoint #8
89 Security Drill for e-commerce checkout backend #9
90 API Operations Playbook #10
91 Endpoint Design Lab for inventory synchronization service #11
92 Reliability Sprint: protect sensitive operations #12
93 Validation and Contract Checkpoint #13
94 Security Drill for notifications orchestration API #14
95 API Operations Playbook #15
96 Endpoint Design Lab for analytics ingestion service #16
97 Reliability Sprint: reduce API latency #17
98 Validation and Contract Checkpoint #18
99 Security Drill for inventory synchronization service #19
100 API Operations Playbook #20
101 Endpoint Design Lab for customer profile service #21
102 Reliability Sprint: stabilize async processing #22
103 Validation and Contract Checkpoint #23
104 Security Drill for analytics ingestion service #24
105 API Operations Playbook #25
106 Endpoint Design Lab for booking reservation API #26
107 Reliability Sprint: enforce strict input validation #27
115 Validation and Contract Checkpoint #8
116 Security Drill for payments status gateway #9
117 API Operations Playbook #10
118 Endpoint Design Lab for notifications orchestration API #11
119 Reliability Sprint: stabilize async processing #12
120 Validation and Contract Checkpoint #13
121 Security Drill for e-commerce checkout backend #14
122 API Operations Playbook #15
123 Endpoint Design Lab for inventory synchronization service #16
124 Reliability Sprint: enforce strict input validation #17
125 Validation and Contract Checkpoint #18
126 Security Drill for notifications orchestration API #19
127 API Operations Playbook #20
128 Endpoint Design Lab for analytics ingestion service #21
129 Reliability Sprint: harden production security posture #22
130 Validation and Contract Checkpoint #23
131 Security Drill for inventory synchronization service #24
132 API Operations Playbook #25
133 Endpoint Design Lab for customer profile service #26
134 Reliability Sprint: improve observability coverage #27
142 Validation and Contract Checkpoint #8
143 Security Drill for admin operations backend #9
144 API Operations Playbook #10
145 Endpoint Design Lab for e-commerce checkout backend #11
146 Reliability Sprint: harden production security posture #12
147 Validation and Contract Checkpoint #13
148 Security Drill for payments status gateway #14
149 API Operations Playbook #15
150 Endpoint Design Lab for notifications orchestration API #16
151 Reliability Sprint: improve observability coverage #17
152 Validation and Contract Checkpoint #18
153 Security Drill for e-commerce checkout backend #19
154 API Operations Playbook #20
155 Endpoint Design Lab for inventory synchronization service #21
156 Reliability Sprint: improve endpoint reliability #22
157 Validation and Contract Checkpoint #23
158 Security Drill for notifications orchestration API #24
159 API Operations Playbook #25
160 Endpoint Design Lab for analytics ingestion service #26
168 Validation and Contract Checkpoint #8
169 Security Drill for e-commerce checkout backend #9
170 API Operations Playbook #10
171 Endpoint Design Lab for inventory synchronization service #11
172 Reliability Sprint: protect sensitive operations #12
173 Validation and Contract Checkpoint #13
174 Security Drill for notifications orchestration API #14
175 API Operations Playbook #15
176 Endpoint Design Lab for analytics ingestion service #16
177 Reliability Sprint: reduce API latency #17
178 Validation and Contract Checkpoint #18
179 Security Drill for inventory synchronization service #19
180 API Operations Playbook #20
181 Endpoint Design Lab for customer profile service #21
182 Reliability Sprint: stabilize async processing #22
183 Validation and Contract Checkpoint #23
184 Security Drill for analytics ingestion service #24
185 API Operations Playbook #25
186 Endpoint Design Lab for booking reservation API #26
187 Reliability Sprint: enforce strict input validation #27
195 Validation and Contract Checkpoint #8
196 Security Drill for payments status gateway #9
197 API Operations Playbook #10
198 Endpoint Design Lab for notifications orchestration API #11
199 Reliability Sprint: stabilize async processing #12
200 Validation and Contract Checkpoint #13
201 Security Drill for e-commerce checkout backend #14
202 API Operations Playbook #15
203 Endpoint Design Lab for inventory synchronization service #16
204 Reliability Sprint: enforce strict input validation #17
205 Validation and Contract Checkpoint #18
206 Security Drill for notifications orchestration API #19
207 API Operations Playbook #20
208 Endpoint Design Lab for analytics ingestion service #21
209 Reliability Sprint: harden production security posture #22
210 Validation and Contract Checkpoint #23
211 Security Drill for inventory synchronization service #24
212 API Operations Playbook #25
213 Endpoint Design Lab for customer profile service #26
214 Reliability Sprint: improve observability coverage #27
222 Validation and Contract Checkpoint #8
223 Security Drill for admin operations backend #9
224 API Operations Playbook #10
225 Endpoint Design Lab for e-commerce checkout backend #11
226 Reliability Sprint: harden production security posture #12
227 Validation and Contract Checkpoint #13
228 Security Drill for payments status gateway #14
229 API Operations Playbook #15
230 Endpoint Design Lab for notifications orchestration API #16
231 Reliability Sprint: improve observability coverage #17
232 Validation and Contract Checkpoint #18
233 Security Drill for e-commerce checkout backend #19
234 API Operations Playbook #20
235 Endpoint Design Lab for inventory synchronization service #21
236 Reliability Sprint: improve endpoint reliability #22
237 Validation and Contract Checkpoint #23
238 Security Drill for notifications orchestration API #24
239 API Operations Playbook #25
240 Endpoint Design Lab for analytics ingestion service #26
248 Validation and Contract Checkpoint #8
249 Security Drill for e-commerce checkout backend #9
250 API Operations Playbook #10
251 Endpoint Design Lab for inventory synchronization service #11
252 Reliability Sprint: protect sensitive operations #12
253 Validation and Contract Checkpoint #13
254 Security Drill for notifications orchestration API #14
255 API Operations Playbook #15
256 Endpoint Design Lab for analytics ingestion service #16
257 Reliability Sprint: reduce API latency #17
258 Validation and Contract Checkpoint #18
259 Security Drill for inventory synchronization service #19
260 API Operations Playbook #20
261 Endpoint Design Lab for customer profile service #21
262 Reliability Sprint: stabilize async processing #22
263 Validation and Contract Checkpoint #23
264 Security Drill for analytics ingestion service #24
265 API Operations Playbook #25
266 Endpoint Design Lab for booking reservation API #26
267 Reliability Sprint: enforce strict input validation #27
275 Validation and Contract Checkpoint #8
276 Security Drill for payments status gateway #9
277 API Operations Playbook #10
278 Endpoint Design Lab for notifications orchestration API #11
279 Reliability Sprint: stabilize async processing #12
280 Validation and Contract Checkpoint #13
281 Security Drill for e-commerce checkout backend #14
282 API Operations Playbook #15
283 Endpoint Design Lab for inventory synchronization service #16
284 Reliability Sprint: enforce strict input validation #17
285 Validation and Contract Checkpoint #18
286 Security Drill for notifications orchestration API #19
287 API Operations Playbook #20
288 Endpoint Design Lab for analytics ingestion service #21
289 Reliability Sprint: harden production security posture #22
290 Validation and Contract Checkpoint #23
291 Security Drill for inventory synchronization service #24
292 API Operations Playbook #25
293 Endpoint Design Lab for customer profile service #26
294 Reliability Sprint: improve observability coverage #27
302 Validation and Contract Checkpoint #8
303 Security Drill for admin operations backend #9
304 API Operations Playbook #10
305 Endpoint Design Lab for e-commerce checkout backend #11
306 Reliability Sprint: harden production security posture #12
307 Validation and Contract Checkpoint #13
308 Security Drill for payments status gateway #14
309 API Operations Playbook #15
310 Endpoint Design Lab for notifications orchestration API #16
311 Reliability Sprint: improve observability coverage #17
312 Validation and Contract Checkpoint #18
313 Security Drill for e-commerce checkout backend #19
314 API Operations Playbook #20
315 Endpoint Design Lab for inventory synchronization service #21
316 Reliability Sprint: improve endpoint reliability #22
317 Validation and Contract Checkpoint #23
318 Security Drill for notifications orchestration API #24
319 API Operations Playbook #25
320 Endpoint Design Lab for analytics ingestion service #26